📝 Update .gitignore and add skipif decorator for fastapi-cli tests

.gitignore

@@ -15,6 +15,8 @@ log.txt
 Pipfile.lock
 env3.*
 env
+.env
+.venv
 docs_build
 site_build
 venv

tests/test_fastapi_cli.py

@@ -6,7 +6,13 @@ from unittest.mock import patch
 import fastapi.cli
 import pytest
 
+fastapi_cli_installed = pytest.mark.skipif(
+    fastapi.cli.cli_main is None,
+    reason="fastapi-cli is not installed",
+)
 
+
+@fastapi_cli_installed
 def test_fastapi_cli():
     result = subprocess.run(
         [