Add support for help all command

[oddcoder]

Signed-off-by: Ahmed <>

[oddcoder]

help is printed twice once for long and once for short version, because we have no accounting of the commands we are printing.

[codecov]

Codecov Report

Attention: Patch coverage is 56.25000% with 7 lines in your changes missing coverage. Please review.

Project coverage is 91.73%. Comparing base (7ccb63c) to head (64c0e73).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
core/src/core.rs	0.00%	5 Missing ⚠️
cmd/src/parser.rs	0.00%	1 Missing ⚠️
eval/src/lib.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #102      +/-   ##
==========================================
- Coverage   91.91%   91.73%   -0.18%     
==========================================
  Files          59       59              
  Lines        3252     3268      +16     
==========================================
+ Hits         2989     2998       +9     
- Misses        263      270       +7     

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