feat: add action

.gitignore

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+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+.DS_Store
+
+# dependency files and directories
+node_modules/
+.npm
+
+# dotenv environment variables file
+.env
+.env.test
+
+# editor
+.vscode

README.md

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+# UUID GitHub Action
+
+GitHub Action to create generate [UUIDs](https://en.wikipedia.org/wiki/Universally_unique_identifier).
+
+Use the `name` argument to be able to generate the same UUID over and over using the same input. If you don't pass `name`, a random UUID will be returned.
+
+## Inputs
+
+### `name`
+
+(optional) Use this to be able to generate a UUID based on input.
+
+### `namespace`
+
+(optional) Set the UUID namespace.
+
+## Outputs
+
+### `uuid`
+
+The generated UUID.
+
+## Example usage
+
+```yaml
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    name: Test UUID action
+    steps:
+      - name: Set UUID
+        id: generate-uuid
+        uses: filipstefansson/uuid-action@v1
+        with:
+          name: ${{ gihub.sha }}
+      # use the output from the `generate-uuid` step
+      - name: Get the UUID
+        run: echo "UUID is ${{ steps.generate-uuid.outputs.uuid }}"
+```

action.yml

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+name: 'UUID Action'
+description: 'Generate UUIDs.'
+inputs:
+  name:
+    description: 'create a UUID using a name.'
+    required: false
+  namespace:
+    description: 'create a UUID using a namespace.'
+    required: false
+outputs:
+  uuid:
+    description: 'the generated UUID.'
+runs:
+  using: 'node12'
+  main: 'dist/index.js'