Update .github directory from main branch (#9155)

.github/actions/tag-npm-release/action.yml

@@ -0,0 +1,53 @@
+name: 'Tag an NPM release'
+description: 'Tags a specific npm version to a specific channel.'
+
+inputs:
+  channel:
+    description: 'NPM Channel tag'
+    required: true
+  version:
+    description: 'version'
+    required: true
+  dry-run:
+    description: 'Whether to run in dry-run mode.'
+    required: true
+  wombat-token-core:
+    description: 'The npm token for the wombat @google/gemini-cli-core'
+    required: true
+  wombat-token-cli:
+    description: 'The npm token for wombat @google/gemini-cli'
+
+runs:
+  using: 'composite'
+  steps:
+    - name: 'Setup Node.js'
+      uses: 'actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020'
+      with:
+        node-version-file: '.nvmrc'
+        registry-url: 'https://wombat-dressing-room.appspot.com'
+        scope: '@google'
+
+    - name: 'Change tag for @google/gemini-cli-core'
+      if: |-
+        ${{ inputs.dry-run == 'false' }}
+      env:
+        NODE_AUTH_TOKEN: '${{ inputs.wombat-token-core }}'
+      shell: 'bash'
+      run: |
+        npm dist-tag add @google/gemini-cli-core@${{ inputs.version }} ${{ inputs.channel }}
+
+    - name: 'Change tag for @google/gemini-cli'
+      if: |-
+        ${{ inputs.dry-run == 'false' }}
+      env:
+        NODE_AUTH_TOKEN: '${{ inputs.wombat-token-cli }}'
+      shell: 'bash'
+      run: |
+        npm dist-tag add @google/gemini-cli@${{ inputs.version }} ${{ inputs.channel }}
+
+    - name: 'Log dry run'
+      if: |-
+        ${{ inputs.dry-run == 'true' }}
+      shell: 'bash'
+      run: |
+        echo "Dry run: Would have added tag '${{ inputs.channel }}' to version '${{ inputs.version }}' for @google/gemini-cli and @google/gemini-cli-core."