ci: adds linting and formatting jobs to on pull request workflow

.github/workflows/on-pull-request.yml

@@ -1,10 +1,9 @@
-name: PR Checks
+name: Lint, Format, and Test
 
 on:
+  workflow_call:
   workflow_dispatch:
   pull_request:
-    branches:
-      - main
 
 env:
   API_KEY: ${{ secrets.API_KEY }}
@@ -13,21 +12,39 @@ env:
   TEST_USER_ID: ${{ secrets.TEST_USER_ID }}
 
 jobs:
-  build:
-    name: Test and Lint
+  lint:
+    name: Lint
     runs-on: ubuntu-latest
-
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - uses: ruby/setup-ruby@v1
       with:
         ruby-version: '3.1'
-
-    - name: Run Tests
-      run: |
-        bundle install
-        ruby tests/all.rb
-    - name: Run Linting
-      run: |
-        npm install -g prettier @prettier/plugin-ruby
-        prettier --check '**/*.rb'
+    - name: Install Rubocop
+      run: gem install rubocop
+    - name: Lint
+      run: rubocop -l
+  format:
+    name: Format
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: '3.1'
+    - name: Install Rubocop
+      run: gem install rubocop
+    - name: Format
+      run: rubocop --format github
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: '3.1'
+    - name: Install dependencies
+      run: bundle install
+    - name: Test
+      run: ruby tests/all.rb

.github/workflows/pr-title-check.yml

@@ -0,0 +1,36 @@
+name: PR Title Check
+
+on:
+  pull_request:
+    types:
+      - opened
+      - reopened
+      - edited
+
+jobs:
+  lint-pr-title:
+    name: Lint PR Title
+    runs-on: ubuntu-latest
+    steps:
+      - uses: amannn/action-semantic-pull-request@v5
+        id: lint_pr_title
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      - uses: marocchino/sticky-pull-request-comment@v2
+        # When the previous steps fails, the workflow would stop. By adding this
+        # condition you can continue the execution with the populated error message.
+        if: always() && (steps.lint_pr_title.outputs.error_message != null)
+        with:
+          header: pr-title-lint-error
+          message: |
+            Please update the pull request title to follow the [Conventional Commits specification](https://www.conventionalcommits.org/en/v1.0.0/).
+            Details:
+            ```
+            ${{ steps.lint_pr_title.outputs.error_message }}
+            ```
+      # Delete a previous comment when the issue has been resolved
+      - if: ${{ steps.lint_pr_title.outputs.error_message == null }}
+        uses: marocchino/sticky-pull-request-comment@v2
+        with:
+          header: pr-title-lint-error
+          delete: true