feat: add ability to set params via exec arg

[jahvon]

This pull request introduces enhancements to the exec command functionality. The most significant change includes adding support for the --param flag to override environment variables. This allows skipping of the prompt form whenever a value is overriden. Note: values set this way now take presence over anything defined in the config.

Note to self: this should help with testing and the desktop integration but I may need to think about how this relates to the args on an executable

[codecov]

Codecov Report

Attention: Patch coverage is 12.90323% with 27 lines in your changes missing coverage. Please review.

Project coverage is 21.90%. Comparing base (4a8303c) to head (67cf0f3).

Files with missing lines	Patch %	Lines
cmd/internal/exec.go	0.00%	27 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #248      +/-   ##
==========================================
- Coverage   21.92%   21.90%   -0.03%     
==========================================
  Files          84       84              
  Lines        7046     7067      +21     
==========================================
+ Hits         1545     1548       +3     
- Misses       5221     5239      +18     
  Partials      280      280              

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