feat: replace scrollbar with gpui-component

[iamazy]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 68.67168% with 250 lines in your changes missing coverage. Please review.
✅ Project coverage is 54.52%. Comparing base (45acaed) to head (643bb6e).

Files with missing lines	Patch %	Lines
crates/gpui_term/src/view/scrollbar.rs	62.56%	201 Missing ⚠️
crates/gpui_term/src/view/scrolling.rs	84.32%	37 Missing ⚠️
crates/gpui_term/src/view/search.rs	0.00%	7 Missing ⚠️
crates/gpui_term/src/element.rs	55.55%	4 Missing ⚠️
crates/gpui_term/src/view/mod.rs	85.71%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #29      +/-   ##
==========================================
+ Coverage   54.20%   54.52%   +0.31%     
==========================================
  Files         160      161       +1     
  Lines       54823    54774      -49     
==========================================
+ Hits        29719    29864     +145     
+ Misses      25104    24910     -194     

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