docs: v2 fr translations of homepage's new sections and community examples link

[PapiHack]

Hello @rrousselGit, hope you're doing well.

Description

This PR is an attempt to translate certain sections in docs homepage and some community examples link.

[codecov]

Codecov Report

Merging #2349 (47b52f2) into docs-v2 (bf6e79c) will not change coverage.
The diff coverage is 100.00%.

Additional details and impacted files

@@           Coverage Diff            @@
##           docs-v2    #2349   +/-   ##
========================================
  Coverage    95.24%   95.24%           
========================================
  Files           53       53           
  Lines         2250     2250           
========================================
  Hits          2143     2143           
  Misses         107      107           

Impacted Files	Coverage Δ
packages/riverpod/lib/src/async_notifier.dart	100.00% <ø> (ø)
.../riverpod/lib/src/async_notifier/auto_dispose.dart	100.00% <ø> (ø)
...od/lib/src/async_notifier/auto_dispose_family.dart	86.36% <ø> (ø)
packages/riverpod/lib/src/async_notifier/base.dart	100.00% <ø> (ø)
...ckages/riverpod/lib/src/async_notifier/family.dart	85.71% <ø> (ø)
...kages/riverpod/lib/src/framework/always_alive.dart	100.00% <ø> (ø)
...ges/riverpod/lib/src/framework/async_selector.dart	96.55% <ø> (ø)
...kages/riverpod/lib/src/framework/auto_dispose.dart	100.00% <ø> (ø)
packages/riverpod/lib/src/framework/element.dart	98.23% <ø> (ø)
packages/riverpod/lib/src/framework/family.dart	100.00% <ø> (ø)
... and 11 more

[rrousselGit]

Thanks! Although these aren't really ready so they'll likely change. But that's fine :)

[rrousselGit]

nit but the old keys should be removed

[PapiHack]

Thanks! Although these aren't really ready so they'll likely change. But that's fine :)

You're welcome.
Oh okay, no worries. It will be a pleasure to re-work on it :)