feat: add web terminal sharing

[iamazy]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 90.40334% with 69 lines in your changes missing coverage. Please review.
✅ Project coverage is 59.79%. Comparing base (42d6f39) to head (e079cb4).

Files with missing lines	Patch %	Lines
termua/src/window/main_window/actions.rs	29.72%	26 Missing ⚠️
termua/src/window/settings/view.rs	77.02%	17 Missing ⚠️
termua/src/web/mod.rs	96.69%	15 Missing ⚠️
termua/src/settings.rs	90.24%	8 Missing ⚠️
crates/gpui_term/src/cast.rs	91.89%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #59      +/-   ##
==========================================
+ Coverage   59.42%   59.79%   +0.36%     
==========================================
  Files         161      161              
  Lines       59645    60311     +666     
==========================================
+ Hits        35444    36060     +616     
- Misses      24201    24251      +50     

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