docs(readme): Add suggestion for contribution guide

Author: sujaya-sys

CONTRIBUTING.md

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+# Contributor guidelines
+
+We are excited that you're interested in contributing to this project! Your efforts help us improve and grow.
+
+# Ways to contribute
+
+There are many ways for you to contribute to the Checkly operator, for example:
+
+- **User feedback:** Share your feedback and impressions about the operator. Your insights are incredibly helpful for us to further improve and develop the project.
+- **Documentation:** Help us identify and fix gaps or issues in our documentation.
+- **Bug reports & fixes:** Encountered a bug or unexpected behavior? Please report it to us, and if possible, contribute a fix.
+- **Feature enhancements:** Propose or work on new features for the operator.
+
+# Finding an issue
+
+You can discover reported bugs, feature ideas, or discussion topics in the [Issues section](https://github.com/checkly/checkly-operator/issues) of this repository. We strive to tag issues with labels such as "good first issue" and "help wanted" to indicate which tasks are up for grabs.
+
+# How to get in touch
+
+You can reach us anytime on **#checkly-k8s-operator** channel in the [Checkly community Slack](https://www.checklyhq.com/slack).
+
+# Commit message guidelines
+We follow the **Angular Conventional Commits** format to ensure consistent and meaningful commit messages, which streamline our release process.
+
+Here’s the basic format:
+
+- `<type>(<scope>): <description>`
+  
+  - **Type**: What kind of change you’re making, like:
+    - `feat`: Adding a new feature.
+    - `fix`: Fixing a bug.
+    - `docs`: Updating documentation.
+    - `style`: Code style changes (e.g., formatting).
+    - `refactor`: Changing code without affecting how it works.
+    - `test`: Adding or updating tests.
+    - `chore`: Routine tasks (e.g., updating dependencies).
+      
+  - **Scope**: Where the change happens (e.g., `operator`, `readme`).
+    
+  - **Description**: A short summary of the change.
+
+Some examples:
+- `docs(readme): Add commit message guidelines`
+- `fix(operator): Fix timeout issue in deployment`
+
+For more info, check out the [Conventional Commits guide](https://www.conventionalcommits.org/en/v1.0.0/).
+
+# Contribution workflow
+
+Our general approach follows the "fork-and-pull" Git workflow:
+
+1. Fork the repository on GitHub.
+2. Clone the project to your local machine.
+3. Make your changes and commit them to a new branch.
+4. Push your branch to your forked repository.
+5. Open a Pull Request so we can review and discuss your changes.
+