PR Difficulty Rating Workflow (#76)

* Add PR Difficulty Rating workflow to test and rate the difficulty of pull requests.

* Add permissions for pull requests to have write access and update the GITHUB_TOKEN value to use secrets.GITHUB_TOKEN.

* Update PR Difficulty Rating action to version 1.0.7.

* Update PR Difficulty Rating action version to v1.0.8

* Update PR Difficulty Rating action to version v1.0.10 in pr-rating.yml.

* Update PR Difficulty Rating action to version v1.0.11 to fix critical bug

Author: MHHukiewitz

.github/workflows/pr-rating.yml

@@ -0,0 +1,19 @@
+name: Test PR Difficulty Rating Action
+
+permissions:
+  pull-requests: write
+
+on:
+  pull_request:
+    types: [opened, reopened, ready_for_review]
+
+jobs:
+  difficulty-rating:
+    runs-on: ubuntu-latest
+    if: github.event.pull_request.draft == false
+    steps:
+      - name: PR Difficulty Rating
+        uses: rate-my-pr/rate@v1.0.11
+        with:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          LLAMA_URL: ${{ secrets.LLAMA_URL }}