fix: add branding to action metadata

.lgtm.yml

@@ -0,0 +1,6 @@
+path_classifiers:
+  test:
+    - __tests__/*.test.ts
+  generated:
+    - dist/**
+    - lib/**

README.md

@@ -2,7 +2,7 @@
 
 # Repolinter Action v1
 
-![Build/Test](https://github.com/newrelic/repolinter-action/workflows/Build/Test/badge.svg) [![codecov](https://codecov.io/gh/newrelic/repolinter-action/branch/main/graph/badge.svg?token=EWYZ7C6RSL)](https://codecov.io/gh/newrelic/repolinter-action)
+![Build/Test](https://github.com/newrelic/repolinter-action/workflows/Build/Test/badge.svg) [![codecov](https://codecov.io/gh/newrelic/repolinter-action/branch/main/graph/badge.svg?token=EWYZ7C6RSL)](https://codecov.io/gh/newrelic/repolinter-action) [![Language grade: JavaScript](https://img.shields.io/lgtm/grade/javascript/g/newrelic/repolinter-action.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/newrelic/repolinter-action/context:javascript)
 
 This action runs [Repolinter](https://github.com/todogroup/repolinter) on your repository. Optionally you can also configure this tool to create GitHub issues with the Repolinter output.
 

action.yml

@@ -89,3 +89,6 @@ outputs:
 runs:
   using: 'node12'
   main: 'dist/index.js'
+branding:
+  color: green
+  icon: refresh-cw