standardize packaging, tooling, docs, CI, and licensing

openapi_first/app.pyi

@@ -1,5 +1,8 @@
-from fastapi import FastAPI
 from typing import Any
 
+from fastapi import FastAPI
+
 class OpenAPIFirstApp(FastAPI):
-    def __init__(self, *, openapi_path: str, routes_module: Any, **fastapi_kwargs: Any) -> None: ...
+    def __init__(
+        self, *, openapi_path: str, routes_module: Any, **fastapi_kwargs: Any
+    ) -> None: ...