add json key extractor

tooling/github/README.md

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+# Common GitHub Actions
+
+Any of these actions can be referenced from your github actions pipeline
+
+```yaml
+uses: ctrlplane/tooling/github/json-key-extractor@main
+```

tooling/github/json-key-extractor/action.yml

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+name: "JSON Key Extractor"
+description: "A composite action that parses a JSON string and extracts the value of a specified key."
+inputs:
+  json-output:
+    description: "The JSON string from which to extract a value."
+    required: true
+  key:
+    description: "The key for which the value should be extracted from the JSON object."
+    required: true
+outputs:
+  value:
+    description: "The extracted value associated with the specified key."
+runs:
+  using: "composite"
+  steps:
+    - name: Extract value from JSON
+      id: extract
+      shell: bash
+      run: |
+        value=$(echo "${{ inputs.json-output }}" | jq -r ".${{ inputs.key }}")
+        echo "value=${value}" >> $GITHUB_OUTPUT