feat. Added workflow for automated testing on PR

.github/workflows/test.yml

@@ -0,0 +1,27 @@
+name: Run Tests
+
+on:
+  push:
+    branches: [dev]
+  pull_request:
+    branches: [dev]
+
+jobs:
+  run-tests:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.9
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install colorama
+
+      - name: Run regex tests
+        run: python ./tests/regex.py