standardize packaging, tooling, docs, CI, and licensing

tests/introspection/test_functions_and_signatures.py

@@ -2,12 +2,10 @@ from docforge import GriffeLoader
 
 
 def test_function_signature(temp_package):
-    (temp_package / "fn.py").write_text(
-        '''def add(a: int, b: int = 1) -> int:
+    (temp_package / "fn.py").write_text('''def add(a: int, b: int = 1) -> int:
     """Adds numbers."""
     return a + b
-'''
-    )
+''')
 
     loader = GriffeLoader()
     project = loader.load_project(["testpkg.fn"])