Add a small contribution auto-reviewer

.github/workflows/workflow.yml

@@ -25,6 +25,8 @@ jobs:
           node-version: 15
       - name: Setup metrics
         run: npm ci
+      - name: Check contributions requirements
+        run: npm test -- ci.test.js
       - name: Run linter
         run: npm run linter
 
@@ -39,7 +41,7 @@ jobs:
       - name: Build lowlighter/metrics:${{ github.head_ref || 'master' }}
         run: docker build -t lowlighter/metrics:${{ github.head_ref || 'master' }} .
       - name: Run tests
-        run: docker run --workdir=/metrics --entrypoint="" lowlighter/metrics:${{ github.head_ref || 'master' }} npm test
+        run: docker run --workdir=/metrics --entrypoint="" lowlighter/metrics:${{ github.head_ref || 'master' }} npm test -- metrics.test.js
 
   # Run CodeQL on branch
   analyze:

tests/ci.test.js

@@ -0,0 +1,13 @@
+//Imports
+  const path = require("path")
+  const git = require("simple-git")(path.join(__dirname, ".."))
+
+//Check generated files editions
+  const diff = async () => (await git.diff("master...", ["--name-status"])).split("\n").map(x => x.trim()).filter(x => /^M\s+/.test(x)).map(x => x.replace(/^M\s+/, ""))
+  describe('Auto-generated files were not modified (use "git checkout @ -- file" if needed)', () => void test.each([
+    "README.md",
+    "source/plugins/README.md",
+    "source/templates/README.md",
+    "action.yml",
+    "settings.example.json"
+  ])("%s", async file => expect((await diff()).includes(file)).toBe(false)))