Moved generate_json_map to new module

[adedamola-sode]

Moved generate_json_map to new module called generate_jsonmap.

1. generate-jsonmap can now be called on the command line
2. It can also be called with an argument when using techui-builder "--generate-jsonmap or -j "

[codecov]

Codecov Report

❌ Patch coverage is 92.26519% with 14 lines in your changes missing coverage. Please review.
✅ Project coverage is 94.38%. Comparing base (49cabfa) to head (fa6e3fd).

Files with missing lines	Patch %	Lines
src/techui_builder/generate_jsonmap.py	95.26%	8 Missing ⚠️
src/techui_builder/__main__.py	40.00%	6 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #226      +/-   ##
==========================================
- Coverage   95.31%   94.38%   -0.93%     
==========================================
  Files          10       11       +1     
  Lines         854      891      +37     
==========================================
+ Hits          814      841      +27     
- Misses         40       50      +10     

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