feat: remove command block shell integration

[iamazy]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 86.36364% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 54.00%. Comparing base (2cf3520) to head (7d21db8).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
termua/src/footbar/mod.rs	0.00%	2 Missing ⚠️
crates/alacritty_terminal/src/event_loop.rs	0.00%	1 Missing ⚠️
crates/gpui_term/src/backends/wezterm/mod.rs	50.00%	1 Missing ⚠️
crates/gpui_term/src/view/render.rs	0.00%	1 Missing ⚠️
crates/gpui_term/src/view/suggestions.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #18      +/-   ##
==========================================
- Coverage   54.27%   54.00%   -0.27%     
==========================================
  Files         171      165       -6     
  Lines       59645    57599    -2046     
==========================================
- Hits        32373    31108    -1265     
+ Misses      27272    26491     -781     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.