Added a step to automatically publish to the discord announcnements channel (#36)

Author: mattfik

.github/workflows/release.yml

@@ -22,4 +22,16 @@ jobs:
           CODEX_API_KEY: ${{ secrets.CODEX_API_KEY }}
       - run: npm publish --access public
         env:
-          NPM_TOKEN: ${{secrets.CODEX_SDK_NPM_TOKEN}}
+          NPM_TOKEN: ${{secrets.CODEX_SDK_NPM_TOKEN}}
+
+      - name: Notify Discord
+        uses: SethCohen/github-releases-to-discord@v1
+        with:
+          webhook_url: ${{secrets.DISCORD_WEBHOOK_URL}}
+          color: "2105893"
+          username: "Codex SDK Release"
+          avatar_url: "https://avatars.githubusercontent.com/u/175457154?s=200&v=4"
+          content: "🚀 New SDK release is now available!"
+          footer_title: "Codex SDK Changelog"
+          reduce_headings: true
+          remove_github_reference_links: false