feat: alt + arrow key to move cursor one word

[Xazin]

Relates: AppFlowy-IO/AppFlowy#2071

[codecov]

Codecov Report

Merging #28 (5585146) into main (16b64cf) will decrease coverage by 0.13%.
The diff coverage is 84.61%.

@@            Coverage Diff             @@
##             main      #28      +/-   ##
==========================================
- Coverage   77.96%   77.84%   -0.13%     
==========================================
  Files         123      123              
  Lines        7053     7094      +41     
==========================================
+ Hits         5499     5522      +23     
- Misses       1554     1572      +18     

Impacted Files	Coverage Δ
...nternal_key_event_handlers/arrow_keys_handler.dart	80.65% <81.81%> (+0.11%)	⬆️
...rvice/shortcut_event/built_in_shortcut_events.dart	98.13% <100.00%> (+0.07%)	⬆️

... and 8 files with indirect coverage changes

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[Xazin]

@LucasXu0 When you have time, can you guide me on how to resolve the issue with tests. I had to make changes because I took over the command that the failing tests were taking advantage of.

[MayurSMahajan]

In test/service/shortcut_event/shortcut_event_test.dart file when you are updating the command to ctrl+arrow left, in macOSCommand you want to use meta instead of ctrl. On line 66: macOsCommand: 'meta+arrow left',

[Xazin]

Thanks @LucasXu0 - That was the issue ...