ci: add automatic version tagging workflow

.github/workflows/auto-tag.yml

@@ -0,0 +1,42 @@
+name: Auto Tag
+
+on:
+  push:
+    branches:
+      - master
+      - main
+    paths-ignore:
+      - '**.md'
+      - '.gitignore'
+      - '.github/**'
+
+jobs:
+  auto-tag:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          
+      - name: Get latest tag
+        id: get_latest_tag
+        run: |
+          git fetch --tags
+          latest_tag=$(git tag -l 'v*' --sort=-v:refname | head -n 1)
+          if [ -z "$latest_tag" ]; then
+            echo "version=v0.1.0" >> $GITHUB_OUTPUT
+          else
+            major=$(echo $latest_tag | cut -d. -f1)
+            minor=$(echo $latest_tag | cut -d. -f2)
+            patch=$(echo $latest_tag | cut -d. -f3)
+            new_patch=$((patch + 1))
+            echo "version=$major.$minor.$new_patch" >> $GITHUB_OUTPUT
+          fi
+
+      - name: Create new tag
+        run: |
+          new_tag=${{ steps.get_latest_tag.outputs.version }}
+          git tag $new_tag
+          git push origin $new_tag