feat: add release-git-tag (#3)

We are adding the release-git-tag action as well as some CICD steps.

Reviewed-on: #3
Co-authored-by: Timo Behrendt <t.behrendt@t00n.de>
Co-committed-by: Timo Behrendt <t.behrendt@t00n.de>

.gitea/workflows/cd.yaml

@@ -0,0 +1,25 @@
+name: CD
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  release:
+    name: Release
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          fetch-depth: 0
+      - run: npm ci
+      - name: Increment tag
+        id: tag
+        uses: https://gitea.t000-n.de/t.behrendt/conventional-semantic-git-tag-increment@0.1.2
+        with:
+          token: ${{ secrets.GITEA_TOKEN }}
+      - name: Push tag
+        run: |
+          git tag ${{ steps.tag.outputs.new-tag }}
+          git push origin ${{ steps.tag.outputs.new-tag }}