docs: 0.22.0 prep

[Madoshakalaka]

About to release 0.22.0!

Thanks to everybody working on and staying with yew

[github-actions]

Visit the preview URL for this PR (updated for commit 7245e81):

https://yew-rs--pr3952-0-22-prep-0bc801z9.web.app

_{(expires Wed, 10 Dec 2025 14:40:04 GMT)}

_{🔥 via Firebase Hosting GitHub Action 🌎}

[Madoshakalaka]

I'll give this PR a few days in case people have any suggestions. I'll edit the date when we finally merge and release.

[github-actions]

Size Comparison

examples	master (KB)	pull request (KB)	diff (KB)	diff (%)
async_clock	98.443	98.443	0	0.000%
boids	166.428	166.428	0	0.000%
communication_child_to_parent	91.539	91.539	0	0.000%
communication_grandchild_with_grandparent	102.625	102.625	0	0.000%
communication_grandparent_to_grandchild	99.030	99.030	0	0.000%
communication_parent_to_child	88.905	88.905	0	0.000%
contexts	104.192	104.192	0	0.000%
counter	85.579	85.579	0	0.000%
counter_functional	85.943	85.943	0	0.000%
dyn_create_destroy_apps	88.747	88.747	0	0.000%
file_upload	98.370	98.370	0	0.000%
function_delayed_input	91.547	91.547	0	0.000%
function_memory_game	169.998	169.998	0	0.000%
function_router	329.361	329.361	0	0.000%
function_todomvc	161.901	161.901	0	0.000%
futures	236.516	236.516	0	0.000%
game_of_life	103.972	103.972	0	0.000%
immutable	246.538	246.538	0	0.000%
inner_html	80.062	80.062	0	0.000%
js_callback	107.969	107.969	0	0.000%
keyed_list	179.285	179.285	0	0.000%
mount_point	83.279	83.279	0	0.000%
nested_list	112.860	112.860	0	0.000%
node_refs	90.933	90.933	0	0.000%
password_strength	1744.004	1744.004	0	0.000%
portals	92.388	92.388	0	0.000%
router	302.311	302.311	0	0.000%
suspense	112.005	112.005	0	0.000%
timer	88.207	88.207	0	0.000%
timer_functional	96.250	96.250	0	0.000%
todomvc	141.711	141.711	0	0.000%
two_apps	85.435	85.435	0	0.000%
web_worker_fib	133.534	133.534	0	0.000%
web_worker_prime	185.825	185.825	0	0.000%
webgl	82.699	82.699	0	0.000%

✅ None of the examples has changed their size significantly.

[Madoshakalaka]

@kirillsemyonkin @its-the-shrimp got anything to say?