vi mode: map cw/cW to ce/cE by default

[crides]

make cw/cW delete uptil the next space (like ce/cE). See the vim help page on cw. This behavior is in both zsh and bash

[codecov]

Codecov Report

Merging #668 (b9659f4) into main (93af55c) will increase coverage by 0.01%.
The diff coverage is 0.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #668      +/-   ##
==========================================
+ Coverage   49.19%   49.20%   +0.01%     
==========================================
  Files          46       46              
  Lines        7930     7928       -2     
==========================================
  Hits         3901     3901              
+ Misses       4029     4027       -2     

Files	Coverage Δ
src/edit_mode/vi/command.rs	30.86% <0.00%> (+0.37%)	⬆️

[sholderbach]

The title was at first a little confusing but you are correct when it comes to the behavior until which character things are changed (if starting on a word. Thanks for linking to the documentation as well! As described in the docs there is a slight difference between ce and cw when on whitespace. so this change wouldn't reflect that, but it would be a judgemeent call if we want to implement that as a separate op before simplifiying things internally for text objects (ciw my beloved).