Re-organize directory structure (#4971)

See discussion in #2491

Co-authored-by: Ivan Levkivskyi <ilevkivskyi@dropbox.com>

stdlib/http/server.pyi

@@ -0,0 +1,72 @@
+import email.message
+import socketserver
+import sys
+from typing import Any, Callable, ClassVar, Dict, List, Mapping, Optional, Sequence, Tuple, Union
+
+if sys.version_info >= (3, 7):
+    from builtins import _PathLike
+
+class HTTPServer(socketserver.TCPServer):
+    server_name: str
+    server_port: int
+    def __init__(self, server_address: Tuple[str, int], RequestHandlerClass: Callable[..., BaseHTTPRequestHandler]) -> None: ...
+
+if sys.version_info >= (3, 7):
+    class ThreadingHTTPServer(socketserver.ThreadingMixIn, HTTPServer):
+        daemon_threads: bool  # undocumented
+
+class BaseHTTPRequestHandler(socketserver.StreamRequestHandler):
+    client_address: Tuple[str, int]
+    server: socketserver.BaseServer
+    close_connection: bool
+    requestline: str
+    command: str
+    path: str
+    request_version: str
+    headers: email.message.Message
+    server_version: str
+    sys_version: str
+    error_message_format: str
+    error_content_type: str
+    protocol_version: str
+    MessageClass: type
+    responses: Mapping[int, Tuple[str, str]]
+    weekdayname: ClassVar[Sequence[str]] = ...  # Undocumented
+    monthname: ClassVar[Sequence[Optional[str]]] = ...  # Undocumented
+    def __init__(self, request: bytes, client_address: Tuple[str, int], server: socketserver.BaseServer) -> None: ...
+    def handle(self) -> None: ...
+    def handle_one_request(self) -> None: ...
+    def handle_expect_100(self) -> bool: ...
+    def send_error(self, code: int, message: Optional[str] = ..., explain: Optional[str] = ...) -> None: ...
+    def send_response(self, code: int, message: Optional[str] = ...) -> None: ...
+    def send_header(self, keyword: str, value: str) -> None: ...
+    def send_response_only(self, code: int, message: Optional[str] = ...) -> None: ...
+    def end_headers(self) -> None: ...
+    def flush_headers(self) -> None: ...
+    def log_request(self, code: Union[int, str] = ..., size: Union[int, str] = ...) -> None: ...
+    def log_error(self, format: str, *args: Any) -> None: ...
+    def log_message(self, format: str, *args: Any) -> None: ...
+    def version_string(self) -> str: ...
+    def date_time_string(self, timestamp: Optional[int] = ...) -> str: ...
+    def log_date_time_string(self) -> str: ...
+    def address_string(self) -> str: ...
+    def parse_request(self) -> bool: ...  # Undocumented
+
+class SimpleHTTPRequestHandler(BaseHTTPRequestHandler):
+    extensions_map: Dict[str, str]
+    if sys.version_info >= (3, 7):
+        def __init__(
+            self,
+            request: bytes,
+            client_address: Tuple[str, int],
+            server: socketserver.BaseServer,
+            directory: Optional[Union[str, _PathLike[str]]] = ...,
+        ) -> None: ...
+    else:
+        def __init__(self, request: bytes, client_address: Tuple[str, int], server: socketserver.BaseServer) -> None: ...
+    def do_GET(self) -> None: ...
+    def do_HEAD(self) -> None: ...
+
+class CGIHTTPRequestHandler(SimpleHTTPRequestHandler):
+    cgi_directories: List[str]
+    def do_POST(self) -> None: ...