feat: Set up github automatic labels (#909)

* feat: Set up automatic labels using github actions
* feat Add the name of the token secret
* feat correct the name of the file
* feat Adjust globbing patterns
* feat Try adding pathing
* feat Rework syntax in labeler
* feat add needs changelog hook
* feat test changelog feature
* feat Remove changelog label
* Update labeler.yml

Author: castastrophe

.github/labeler.yml

@@ -0,0 +1,24 @@
+demo:
+  - examples/*
+  - elements/*/demo/*
+
+doc:
+  - docs/**/*
+  - elements/**/*.{md,txt}
+
+functionality:
+  - elements/*/src/*.{js,html}
+
+styles:
+  - elements/*/src/*.{scss,css}
+  - tokens/**/*
+
+tests: 
+  - elements/*/test/*
+
+tools:
+  - scripts/*
+  - elements/*/gulpfile.js
+  - elements/*/rollup.config.js
+  - ./.*
+  - ./*.{js,json,yml}

.github/workflows/label.yml

@@ -0,0 +1,21 @@
+# This workflow will triage pull requests and apply a label based on the
+# paths that are modified in the pull request.
+#
+# To use this workflow, you will need to set up a .github/labeler.yml
+# file with configuration.  For more information, see:
+# https://github.com/actions/labeler/blob/master/README.md
+
+name: Pull request labeler
+on:
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  label:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/labeler@v2
+        with:
+          repo-token: "${{ secrets.ACTIONS }}"

CHANGELOG-prerelease.md

@@ -1,3 +1,7 @@
+## Prerelease 50 ( TBD )
+
+- [](https://github.com/patternfly/patternfly-elements/commit/) Add automatic labeling to PRs
+
 ## Prerelease 49 ( 2020-05-29 )
 
 - [9adb7ce](https://github.com/patternfly/patternfly-elements/commit/9adb7ce4e5a672192ca49af8a7b7f9afb5f56e75) feat: pfe-jump-links (#858)