Improve Github workflow

- Update `pull_request` triggers types to only ones which correspond to code changes;
- Extract jobs from `default.yml` workflow to re-usable `test.yml` to be able to split default workflow to two workflow with different set of triggers - "schedule" and "pull_request/push"

.github/workflows/default.yml

@@ -3,34 +3,12 @@ on:
   push:
     branches:
       - main
-  pull_request: {}
-  schedule:
-    - cron:  '0 14 * * MON'
+  pull_request:
+    types:
+      - opened
+      - synchronize
+      - reopened
 
 jobs:
-  test:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-      - name: Set up Python 3.12.5
-        uses: actions/setup-python@v5
-        with:
-          python-version: 3.12.5
-      - name: Install Python dependencies
-        run: |
-          python3 -m venv venv
-          source ./venv/bin/activate
-          pip install -U pip
-          pip install -r ./requirements.txt
-      - name: Run tests on hooks
-        run: |
-          source ./venv/bin/activate
-          inv test.hooks
-      - name: Run tests on building project
-        run: |
-          source ./venv/bin/activate
-          cookiecutter --no-input --overwrite-if-exists --output-dir build .
-          cd build/awesome
-          cp ./api/.env.example ./api/.env
-          make api-test
+  run-checks:
+    uses: django-stars/backend-skeleton/.github/workflows/test.yml@improve-github-workflow

.github/workflows/schedule.yml

@@ -0,0 +1,8 @@
+name: Backend Skeleton Scheduled Check
+on:
+  schedule:
+    - cron:  '0 14 * * MON'
+
+jobs:
+  run-checks:
+    uses: django-stars/backend-skeleton/.github/workflows/test.yml@improve-github-workflow

.github/workflows/test.yml

@@ -0,0 +1,32 @@
+name: Test
+
+on:
+  workflow_call:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Set up Python 3.12.5
+        uses: actions/setup-python@v5
+        with:
+          python-version: 3.12.5
+      - name: Install Python dependencies
+        run: |
+          python3 -m venv venv
+          source ./venv/bin/activate
+          pip install -U pip
+          pip install -r ./requirements.txt
+      - name: Run tests on hooks
+        run: |
+          source ./venv/bin/activate
+          inv test.hooks
+      - name: Run tests on building project
+        run: |
+          source ./venv/bin/activate
+          cookiecutter --no-input --overwrite-if-exists --output-dir build .
+          cd build/awesome
+          cp ./api/.env.example ./api/.env
+          make api-test