[compat] Split into sub-modules (#2173)

Authored by: fstirlitz, pukkandan

yt_dlp/compat/asyncio/__init__.py

@@ -0,0 +1,16 @@
+# flake8: noqa: F405
+
+from asyncio import *  # noqa: F403
+
+from . import tasks  # noqa: F401
+
+try:
+    run  # >= 3.7
+except NameError:
+    def run(coro):
+        try:
+            loop = get_event_loop()
+        except RuntimeError:
+            loop = new_event_loop()
+            set_event_loop(loop)
+        loop.run_until_complete(coro)