Add test dependencies for CI

Author: Poryaei

.github/workflows/ci.yml

@@ -26,7 +26,7 @@ jobs:
       - name: Install project
         run: |
           python -m pip install --upgrade pip
-          pip install -e .
+          pip install -e .[dev]
 
       - name: Run tests
         run: python -m pytest -q

pyproject.toml

@@ -34,6 +34,11 @@ Issues = "https://github.com/Poryaei/pine-script-validator/issues"
 pine-validator = "pinescript_validator.cli:main"
 pine-validator-audit = "pinescript_validator.audit:main"
 
+[project.optional-dependencies]
+dev = [
+    "pytest>=8.0",
+]
+
 [tool.setuptools]
 package-dir = {"" = "src"}