Implement asyncio guest mode and with sample code work with it

Purpose

1. Make asyncio work with all GUI frameworks, sample code be implemented in tornado, pygame, tkinter, gtk, qt5, win32, pyside6
2. Make webview_python library support call async python from javascript a. https://github.com/congzhangzh/webview_python b. https://github.com/congzhangzh/webview_python/issues/1

Core implement part

Design: ./design_en.md

1. guest mode implemented here: https://github.com/congzhangzh/asyncio-guest/blob/master/asyncio_guest/asyncio_guest_run.py
2. python stdlib patch here: https://github.com/congzhangzh/asyncio-guest/blob/master/asyncio_guest/patches/base_events.diff

GUI support status

Framework	Windows	Linux	Mac
Tkinter	✅	✅	❓
Win32	✅	➖	➖
GTK	❓	✅	❓
QT	✅	✅	❓
PySide6	✅	✅	❓
Pygame	✅	✅	❓
Tornado	✅	✅	❓

Sample reference

1. Tkinter: https://github.com/congzhangzh/asyncio-guest/blob/master/asyncio_guest/asyncio_guest_tkinter.py
2. Win32: https://github.com/congzhangzh/asyncio-guest/blob/master/asyncio_guest/asyncio_guest_win32.py
3. GTK: https://github.com/congzhangzh/asyncio-guest/blob/master/asyncio_guest/asyncio_guest_gtk.py
4. QT: https://github.com/congzhangzh/asyncio-guest/blob/master/asyncio_guest/asyncio_guest_qt5.py
5. PySide6: https://github.com/congzhangzh/asyncio-guest/blob/master/asyncio_guest/asyncio_guest_pyside6.py
6. Pygame: https://github.com/congzhangzh/asyncio-guest/blob/master/asyncio_guest/asyncio_guest_pygame.py
7. Tornado: https://github.com/congzhangzh/asyncio-guest/blob/master/asyncio_guest/asyncio_guest_tornado.py

This project inspired by

ElectronJS (main: this teach me most)

1. https://www.electronjs.org/blog/electron-internals-node-integration

V8 embed (main: JS is really ugly, but once some rich one keep use and improve it, it will be wonderful )

1. https://v8.dev/docs/embed

Trio ( Their passion and example really help:) )

1. https://trio.readthedocs.io/en/stable/reference-lowlevel.html#using-guest-mode-to-run-trio-on-top-of-other-event-loops
2. https://github.com/richardsheridan/trio-guest

Julia WebView ( Julia's thread mode and await is really ugly? )

Period yield to julia schedule

1. Trigger by timer: https://github.com/sunoru/Webviews.jl/blob/b28fb63300ac68a8f1a098e53237f1af46f99133/src/platforms/windows/Impl.jl#L58
2. Trigger by timer: https://github.com/sunoru/Webviews.jl/blob/b28fb63300ac68a8f1a098e53237f1af46f99133/src/platforms/windows/Impl.jl#L59
3. Impl: https://github.com/sunoru/Webviews.jl/blob/b28fb63300ac68a8f1a098e53237f1af46f99133/src/platforms/common.jl#L16

Custom message loop to support peried trigger (maybe a hidden window and custom wndproc is better?)

1. https://github.com/sunoru/Webviews.jl/blob/b28fb63300ac68a8f1a098e53237f1af46f99133/src/platforms/windows/Impl.jl#L74
2. https://github.com/sunoru/Webviews.jl/blob/b28fb63300ac68a8f1a098e53237f1af46f99133/src/platforms/windows/Impl.jl#L83

Julia Makie (Julia's thread mode and await is really ugly? )

1. https://github.com/MakieOrg/Makie.jl (after some crash of Makie, I understand how julia thread model works)

Qt for Python (Offical, wait for many years, but still partial)

1. qtforpython
2. https://doc.qt.io/qtforpython-6/examples/example_async_minimal.html

Some other gusy attempts (pool based, not so good)

1. https://github.com/gmarull/asyncqt
2. https://github.com/harvimt/quamash
3. https://github.com/CabbageDevelopment/qasync

Discuss with other guys

1. https://discuss.python.org/t/connecting-asyncio-and-tkinter-event-loops/14722/33
2. https://github.com/congzhangzh/webview_python/issues/1
3. https://github.com/webview/webview_deno/issues/185

Some early attempts:

1. https://github.com/congzhangzh/python_gui_with_asyncio
2. Where all important iteration happend: https://github.com/congzhangzh/asyncio_guest_run/tree/main/v2

Others fields maybe help

Deno JavaScript runtime & Tokio & V8

1. https://github.com/denoland/deno/pull/3844
2. https://choubey.gitbook.io/internals-of-deno/threading-model/default-threads
3. https://docs.rs/tokio/latest/tokio/runtime/index.html#current-thread-runtime-behavior-at-the-time-of-writing
4. https://questions.deno.com/m/1247553728001609729
5. https://www.reddit.com/r/rust/comments/tln9nu/what_is_the_difference_between_tokio_singlethread/