ci: EXPOSED-725 Enforce commit message rules

1. Added `commit-message-validation.yml` that runs a bash script to check the commit messages using a regular expression. The `validate-commits` job will run when the pull request is first opened and on every push.
2. Added `pull-request-title-validation.yml` that runs a bash script to check the pull request's title using a regular expression. The `validate-PR-title` job will run on every edit of the pull request. It's not possible to isolate this to title edits only at the moment, so edits to other parts like the body and labels will also trigger this workflow.

Author: joc-a

.github/workflows/commit-message-validation.yml

@@ -0,0 +1,66 @@
+# This workflow ensures that all commit messages in a pull request adhere to the Conventional Commits specification.
+
+name: Commit Message Validation
+
+on:
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+  # Triggers the workflow on pull request events targeting the main branch
+  pull_request:
+    branches:
+      - main
+    types:
+      - opened
+      - synchronize
+      - reopened
+
+jobs:
+  validate-commits:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - name: Validate commit messages
+        run: |
+          # Regex for Conventional Commits specification
+          COMMIT_REGEX="^(build|chore|ci|docs|feat|fix|perf|refactor|revert|style|test)(\([^\)]*\))?:\s?(EXPOSED-[0-9]+\s?)?.+$"
+          
+          # Get all commits in the pull request (from base to head)
+          COMMITS=$(git log --format=%s --no-merges origin/main..${{ github.sha }})
+
+          # Initialize counters and store invalid commits
+          INVALID_COMMITS=()
+          VALID_COMMITS=()
+          
+          echo "ℹ️ Checking if commit messages are following the Conventional Commits specification..."
+
+          # Loop through each commit message
+          IFS=$'\n'
+          for COMMIT_MSG in $COMMITS; do
+            # Check if commit message matches the regex
+            if [[ ! "$COMMIT_MSG" =~ $COMMIT_REGEX ]]; then
+              INVALID_COMMITS+=("$COMMIT_MSG")
+              echo -e "❌ $COMMIT_MSG"
+            else
+              VALID_COMMITS+=("$COMMIT_MSG")
+              echo -e "✅ $COMMIT_MSG"
+            fi
+          done
+
+          # If there are invalid commits, print the summary
+          if [ ${#INVALID_COMMITS[@]} -gt 0 ]; then
+            echo ""
+            echo "🛑 Some commit messages are not following the Conventional Commits specification."
+            echo ""
+            echo "Valid commit message format: <type>(<optional scope>): <subject>"
+            echo "Example: fix: Bug in insert"
+            echo "Please check https://www.conventionalcommits.org/en/v1.0.0/#summary"
+            exit 1
+          fi
+
+          echo "🎉 All commit messages are following the Conventional Commits specification."

.github/workflows/pull-request-title-validation.yml

@@ -0,0 +1,45 @@
+# This workflow ensures that all commit messages in a pull request adhere to the Conventional Commits specification.
+
+name: Pull Request Title Validation
+
+on:
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+  # Triggers the workflow on pull request events targeting the main branch
+  pull_request:
+    branches:
+      - main
+    types:
+      - opened
+      - synchronize
+      - edited
+      - reopened
+
+jobs:
+  validate-PR-title:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Validate PR title
+        run: |
+          # Regex for Conventional Commits specification
+          PR_TITLE_REGEX="^(build|chore|ci|docs|feat|fix|perf|refactor|revert|style|test)(\([^\)]*\))?:\s?(EXPOSED-[0-9]+\s?)?.+$"
+
+          # Get the PR title
+          PR_TITLE="${{ github.event.pull_request.title }}"
+
+          # Check if PR title matches the regex
+          if [[ ! "$PR_TITLE" =~ $PR_TITLE_REGEX ]]; then
+            echo "❌ The PR title does not follow the Conventional Commits specification."
+            echo "PR Title -> $PR_TITLE"
+            echo "Valid PR title format: <type>(<optional scope>): <optional EXPOSED-<number>> <subject>"
+            echo "Example: fix: Bug in insert"
+            echo "Please check https://www.conventionalcommits.org/en/v1.0.0/#summary"
+            exit 1
+          else
+            echo "🎉 The PR title is following the Conventional Commits specification."
+          fi