Added various NPM scripts.

npm/npm-query-versions/action.yaml

@@ -0,0 +1,28 @@
+name: npm-query-versions
+description: "Get all versions of an NPM package from a registry."
+inputs:
+  name:
+    description: "Name of the package."
+    required: true
+  registry:
+    description: "NPM registry URL."
+    required: false
+    default: "https://npm.pkg.github.com"
+  authToken:
+    description: "Authentication token for the registry."
+    required: true
+  prerelease:
+    description: "Include prerelease packages. Values: true, false."
+    required: false
+    default: "false"
+outputs:
+  versions:
+    description: "Newline-separated list of versions."
+    value: ${{ steps.query.outputs.versions }}
+runs:
+  using: "composite"
+  steps:
+  - name: "Query NPM registry for versions."
+    id: query
+    run: bash ${{ github.action_path }}/query_versions.sh "${{ inputs.name }}" "${{ inputs.registry }}" "${{ inputs.authToken }}" "${{ inputs.prerelease }}"
+    shell: bash