Re-organize directory structure (#4971)

See discussion in #2491

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

stdlib/trace.pyi

@@ -0,0 +1,43 @@
+import types
+from _typeshed import StrPath
+from typing import Any, Callable, Mapping, Optional, Sequence, Tuple, TypeVar, Union
+
+_T = TypeVar("_T")
+_localtrace = Callable[[types.FrameType, str, Any], Callable[..., Any]]
+
+class CoverageResults:
+    def update(self, other: CoverageResults) -> None: ...
+    def write_results(self, show_missing: bool = ..., summary: bool = ..., coverdir: Optional[StrPath] = ...) -> None: ...
+    def write_results_file(
+        self, path: StrPath, lines: Sequence[str], lnotab: Any, lines_hit: Mapping[int, int], encoding: Optional[str] = ...
+    ) -> Tuple[int, int]: ...
+
+class Trace:
+    def __init__(
+        self,
+        count: int = ...,
+        trace: int = ...,
+        countfuncs: int = ...,
+        countcallers: int = ...,
+        ignoremods: Sequence[str] = ...,
+        ignoredirs: Sequence[str] = ...,
+        infile: Optional[StrPath] = ...,
+        outfile: Optional[StrPath] = ...,
+        timing: bool = ...,
+    ) -> None: ...
+    def run(self, cmd: Union[str, types.CodeType]) -> None: ...
+    def runctx(
+        self,
+        cmd: Union[str, types.CodeType],
+        globals: Optional[Mapping[str, Any]] = ...,
+        locals: Optional[Mapping[str, Any]] = ...,
+    ) -> None: ...
+    def runfunc(self, func: Callable[..., _T], *args: Any, **kw: Any) -> _T: ...
+    def file_module_function_of(self, frame: types.FrameType) -> Tuple[str, Optional[str], str]: ...
+    def globaltrace_trackcallers(self, frame: types.FrameType, why: str, arg: Any) -> None: ...
+    def globaltrace_countfuncs(self, frame: types.FrameType, why: str, arg: Any) -> None: ...
+    def globaltrace_lt(self, frame: types.FrameType, why: str, arg: Any) -> None: ...
+    def localtrace_trace_and_count(self, frame: types.FrameType, why: str, arg: Any) -> _localtrace: ...
+    def localtrace_trace(self, frame: types.FrameType, why: str, arg: Any) -> _localtrace: ...
+    def localtrace_count(self, frame: types.FrameType, why: str, arg: Any) -> _localtrace: ...
+    def results(self) -> CoverageResults: ...