Fix the CLI when it is not attached to a TTY

[hansl]

This a simple fix when the CLI is not attached to a TTY. In those cases it would print an error readline thread failed: ENOTTY: Not a typewriter.

This fixes it by doing three things;

1. by default, if no printers has been set, use stdout normally. This makes sense as if any logging occurs before readline can be initialized, we still want to see it.
2. move back starting the readline loop after args files/expressions are handled.
3. if we cannot build a writer for some reason, don't stop the thread. readline still works, but printers won't, so we just show logs on stdout. This can happen if STDIN is a pipe.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 51.26%. Comparing base (6ddc2b4) to head (5062f53).
⚠️ Report is 532 commits behind head on main.

Files with missing lines	Patch %	Lines
cli/src/main.rs	0.00%	3 Missing ⚠️
cli/src/logger.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4424      +/-   ##
==========================================
+ Coverage   47.24%   51.26%   +4.02%     
==========================================
  Files         476      502      +26     
  Lines       46892    51292    +4400     
==========================================
+ Hits        22154    26297    +4143     
- Misses      24738    24995     +257     

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