feat: implement --no-exit

[wolfv]

This is what powershell implements and it's quite useful in my opinion.
It allows us to execute a script (after RC files) and then drop into an interactive prompt. For something like pixi shell this is very useful.

[wolfv]

@certik would be happy to hear your thoughts. For now, this can work as a custom "RC" file thing (e.g. you could point your shell to shell init-file.sh --no-exit and then have some aliases etc. defined,.

[certik]

I think that's fine. Isn't there a more descriptive command line option? I first thought --no-exit will not allow you to exit, which might not be what was intended. :)

[wolfv]

@certik what do you think about --continue?

[certik]

That's better. Maybe also --interact ? I think the main difference is that shell a.sh executes it and returns. While shell a.sh --interact (or shell a.sh --continue) will open an interactive prompt.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 5 lines in your changes missing coverage. Please review.

Project coverage is 61.93%. Comparing base (89c4910) to head (9156417).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/shell/src/main.rs	0.00%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #118      +/-   ##
==========================================
- Coverage   62.04%   61.93%   -0.11%     
==========================================
  Files          30       30              
  Lines        2959     2961       +2     
==========================================
- Hits         1836     1834       -2     
- Misses       1123     1127       +4     

Flag	Coverage Δ
	61.93% <0.00%> (-0.11%)	⬇️

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[prsabahrami]

@wolfv @certik Are you okay with merging this? I think this can be quite useful. Not sure how we can add tests for this. We have to add a tester for the CLI itself as well later.

[prsabahrami]

Used --interact instead of --no-exit.

[wolfv]

Works for me!