feat: Delete text selection with backspace

[marc2332]

Depends on #622

[codecov]

Codecov Report

Attention: Patch coverage is 83.33333% with 12 lines in your changes are missing coverage. Please review.

Project coverage is 73.10%. Comparing base (128b962) to head (55d9bea).
Report is 2 commits behind head on main.

❗ Current head 55d9bea differs from pull request most recent head eed87fa

Please upload reports for the commit eed87fa to get more accurate results.

Files	Patch %	Lines
crates/hooks/src/text_editor.rs	76.19%	5 Missing ⚠️
crates/hooks/src/editor_history.rs	20.00%	4 Missing ⚠️
crates/hooks/src/rope_editor.rs	85.71%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #640      +/-   ##
==========================================
+ Coverage   73.00%   73.10%   +0.10%     
==========================================
  Files         192      192              
  Lines       19151    19156       +5     
==========================================
+ Hits        13981    14004      +23     
+ Misses       5170     5152      -18     

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