feat: Select all text

[marc2332]

Support selecting all the text with Ctrl/Meta + A

[codecov]

Codecov Report

Attention: Patch coverage is 93.47826% with 6 lines in your changes are missing coverage. Please review.

Project coverage is 73.90%. Comparing base (7908f61) to head (794ab96).

Files	Patch %	Lines
crates/hooks/tests/use_editable.rs	93.10%	6 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #652      +/-   ##
==========================================
+ Coverage   73.79%   73.90%   +0.11%     
==========================================
  Files         194      194              
  Lines       19876    19968      +92     
==========================================
+ Hits        14668    14758      +90     
- Misses       5208     5210       +2     

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