docs: create pull-request-code-checks

Author: gladiuscode

docs/pull-request-code-checks.md

@@ -0,0 +1,53 @@
+# Pull request code checks
+
+When a new pull request is opened against the main branch, it is a good idea to run some checks on the code to make sure
+that it is up to the standards of the project.
+You can run it on every push, but it is better to run it only when a pull request is approved, to avoid reaching the
+limits of the Github Actions free tier.
+
+Take a look at the following example:
+
+```yaml
+
+name: pull-request-code-checks
+
+on:
+  # (1) Run the workflow only when a pull request is:
+  # - opened against the main branch
+  # - and a review is submitted
+  pull_request_review:
+    branches:
+      - main
+    types: [ submitted ]
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup
+        uses: ./.github/actions/setup
+
+      - name: Build
+        run: yarn build
+
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup
+        uses: ./.github/actions/setup
+
+      - name: Lint
+        run: yarn lint
+
+```
+