ci(bump): auto bump version on push to main

Add a GitHub Actions workflow `version_bump.yml` that automatically runs `cz bump` whenever the main branch is pushed.
This includes generating a new version number, updating the changelog, creating a commit and tag.

The workflow also pushes the resulting commit and tag back to the main branch, enabling a fully automated versioning process.

Author: RicardoRyn

.github/workflows/version_bump.yml

@@ -0,0 +1,39 @@
+name: Version Bump
+
+on:
+  push:
+    branches:
+      - main
+
+permissions:
+  contents: write
+
+jobs:
+  bump-version:
+    if: "!contains(github.event.head_commit.message, 'bump:')"
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: 3.x
+
+      - name: Install dependencies
+        run: |
+          pip install uv
+          uv tool install commitizen
+
+      - name: Run cz bump
+        run: |
+          cz bump --yes --changelog
+
+      - name: Push bump commit and tag
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git push origin main
+          git push oigin --tags