Automating adding Hacktoberfest labels (#810)

This PR introduces two key improvements to streamline our Hackathon
process:

PR Template for Hackathon Contributors:
Added a standardized template to guide contributors in providing
necessary information for their Pull Requests.

Auto-labeling GitHub Action:
Implemented an automated system to apply labels to issues. This
enhancement allows us to:

Efficiently track points across repositories
Accurately count the number of contributors per PR

These changes will facilitate better organization and provide real-time
insights into Hackathon participation. For an up-to-date view of
participant standings, please refer to our leaderboard:
TBD54566975/developer.tbd.website#1680

---------

Co-authored-by: Rizel Scarlett <rizel@squareup.com>

Author: blackgirlbytes

.github/PULL_REQUEST_TEMPLATE.md

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+<!--
+  For Work In Progress Pull Requests, please use the Draft PR feature,
+  see https://github.blog/2019-02-14-introducing-draft-pull-requests/ for further details.
+  
+  For a timely review/response, please avoid force-pushing additional
+  commits if your PR already received reviews or comments.
+  
+  Before submitting a Pull Request, please ensure you've done the following:
+  - 📖 Read the TBD Developer Website Contributing Guide: https://github.com/TBD54566975/developer.tbd.website/blob/main/CONTRIBUTING.md.
+  - 📖 Read the TBD Developer Website Code of Conduct: https://github.com/TBD54566975/developer.tbd.website/blob/main/CODE_OF_CONDUCT.md.
+  - 👷‍♀️ Create small PRs. In most cases, this will be possible.
+  - ✅ Provide tests for your changes.
+  - 📝 Use descriptive commit messages.
+  - 📗 Update any related documentation and include any relevant screenshots.
+-->
+
+## What type of PR is this? (check all applicable)
+
+- [ ] ♻️ Refactor
+- [ ] ✨ New Feature
+- [ ] 🐛 Bug Fix
+- [ ] 📝 Documentation Update
+- [ ] 👷 Example Application
+- [ ] 🧑‍💻 Code Snippet
+- [ ] 🎨 Design
+- [ ] 📖 Content
+- [ ] 🧪 Tests
+- [ ] 🔖 Release
+- [ ] 🚩 Other
+
+## Description
+
+<!-- Please do not leave this blank -->
+
+This PR [adds/removes/fixes/replaces] this [feature/bug/etc]. 
+
+## Related Tickets & Documents
+<!-- 
+Please use this format link issue numbers: Resolves #123
+https://docs.github.com/en/free-pro-team@latest/github/managing-your-work-on-github/linking-a-pull-request-to-an-issue#linking-a-pull-request-to-an-issue-using-a-keyword 
+-->
+Resolves #
+
+## Mobile & Desktop Screenshots/Recordings
+
+<!-- Visual changes require screenshots -->
+
+## Added code snippets?
+- [ ] 👍 yes
+- [ ] 🙅 no, because they aren't needed
+
+## Added tests?
+
+- [ ] 👍 yes
+- [ ] 🙅 no, because they aren't needed
+- [ ] 🙋 no, because I need help
+
+### No tests? Add a note
+<!-- 
+If you didn't provide tests with this PR, please explain here why they aren't needed.
+-->
+
+## Added to documentation?
+
+- [ ] 📜 readme
+- [ ] 📜 contributing.md
+- [ ] 📓 general documentation
+- [ ] 🙅 no documentation needed
+
+### No docs? Add a note
+<!-- 
+If you didn't provide documentation with this PR, please explain here why it's not needed.
+-->
+
+## [optional] Are there any post-deployment tasks we need to perform?
+
+
+
+## [optional] What gif best describes this PR or how it makes you feel?
+
+
+
+<!-- note: PRs with deletes sections will be marked invalid -->

.github/workflows/add-hacktoberfest-labels.yml

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+name: Propagate Issue Labels to PR
+on:
+  pull_request:
+    types: [opened, synchronize]
+jobs:
+  copy_labels:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+    - name: Get issue number from PR body
+      id: issue_number
+      uses: actions/github-script@v6
+      with:
+        github-token: ${{ secrets.GITHUB_TOKEN }}
+        script: |
+          const prBody = context.payload.pull_request.body || '';
+          // Remove HTML comments
+          const bodyWithoutComments = prBody.replace(/<!--[\s\S]*?-->/g, '');
+          // Find issue number
+          const match = bodyWithoutComments.match(/(?:Resolves|Closes) #(\d+)/);
+          const issueNumber = match ? match[1] : null;
+          if (issueNumber) {
+            console.log(`Issue number found: ${issueNumber}`);
+            core.setOutput('has_issue', 'true');
+            core.setOutput('issue_number', issueNumber);
+          } else {
+            console.log('No issue number found in PR body');
+            core.setOutput('has_issue', 'false');
+          }
+    - name: Get labels from linked issue
+      if: steps.issue_number.outputs.has_issue == 'true'
+      uses: actions/github-script@v6
+      id: issue_labels
+      with:
+        github-token: ${{ secrets.GITHUB_TOKEN }}
+        script: |
+          const issue_number = ${{ steps.issue_number.outputs.issue_number }};
+          try {
+            const issue = await github.rest.issues.get({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: parseInt(issue_number)
+            });
+            return issue.data.labels.map(label => label.name);
+          } catch (error) {
+            console.log(`Error fetching issue labels: ${error}`);
+            return [];
+          }
+    - name: Check for required labels
+      if: steps.issue_number.outputs.has_issue == 'true' && steps.issue_labels.outputs.result != '[]'
+      id: check_labels
+      uses: actions/github-script@v6
+      with:
+        github-token: ${{ secrets.GITHUB_TOKEN }}
+        script: |
+          const labels = ${{ steps.issue_labels.outputs.result }};
+          const hacktoberfestLabel = labels.some(label => label.toLowerCase().includes('hacktoberfest'));
+          const sizeLabelPresent = labels.some(label => ['small', 'medium', 'large'].includes(label.toLowerCase()));
+          return hacktoberfestLabel || sizeLabelPresent;
+    - name: Add labels to PR
+      if: steps.issue_number.outputs.has_issue == 'true' && steps.check_labels.outputs.result == 'true'
+      uses: actions/github-script@v6
+      with:
+        github-token: ${{ secrets.GITHUB_TOKEN }}
+        script: |
+          const pr_number = context.issue.number;
+          const labels = ${{ steps.issue_labels.outputs.result }};
+          try {
+            await github.rest.issues.addLabels({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: pr_number,
+              labels: labels
+            });
+            console.log('Labels added successfully');
+          } catch (error) {
+            console.log(`Error adding labels: ${error}`);
+          }