add actions

.gitea/actions/create-tag/action.yml

@@ -0,0 +1,27 @@
+name: "Create New Tag"
+description: "Compute the next semantic version tag based on existing tags"
+
+outputs:
+  new_tag:
+    description: "The new tag computed for this build"
+    value: ${{ steps.tag.outputs.new_tag }}
+
+runs:
+  using: "composite"
+  steps:
+    - name: Create New Tag
+      id: tag
+      shell: bash
+      run: |
+        echo "Computing new tag..."
+        latest_tag=$(git describe --tags $(git rev-list --tags --max-count=1) 2>/dev/null || echo "")
+        if [ -z "$latest_tag" ]; then
+          new_tag="v1.0.0"
+        else
+          IFS='.' read -r major minor patch <<< "${latest_tag#v}"
+          minor=$((minor + 1))
+          patch=0
+          new_tag="v${major}.${minor}.${patch}"
+        fi
+        echo "new_tag=$new_tag" >> $GITHUB_OUTPUT
+        echo "Computed new tag: $new_tag"