Add tensora CLI

[drhagen]

This adds a Typer script called tensora to the Python entry points of the distribution. This CLI takes an assignment string and format strings to generate the C code. Either assembly, compute, or evaluate kernels can be generated. The code can be printed to standard out or to a file.

[codecov-commenter]

Codecov Report

Attention: 14 lines in your changes are missing coverage. Please review.

Comparison is base (7298cbb) 88.74% compared to head (8286913) 88.49%.

Files	Patch %	Lines
src/tensora/cli.py	67.44%	8 Missing and 6 partials ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##           master      #19      +/-   ##
==========================================
- Coverage   88.74%   88.49%   -0.25%     
==========================================
  Files          46       47       +1     
  Lines        2762     2807      +45     
  Branches      492      503      +11     
==========================================
+ Hits         2451     2484      +33     
- Misses        237      245       +8     
- Partials       74       78       +4     

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