Add action metadata

action.yml

@@ -0,0 +1,22 @@
+name: "Setup Nextflow"
+description: "Install Nextflow and add it to the PATH"
+author: "Thomas A. Christensen II"
+inputs:
+  version:
+    description: "The Nextflow version to download (if necessary) and use. Example: 21.10.3"
+    required: false
+    default: "latest-stable"
+  all:
+    description: "Whether to install every Nextflow release via the '-all' distribution."
+    required: false
+    default: false
+  token:
+    description: "GitHub token to access the GitHub Releases API. The default token should be sufficient for all use cases."
+    required: false
+    default: ${{ github.token }}
+runs:
+  using: "node16"
+  main: "index.js"
+branding:
+  icon: "shuffle"
+  color: "green"