Update component creation script

[PsiKai]

Updates in and around the component creation script

• Now adding entries to the demo file and the lib index
• Converts remaining js modules to typescript
• Includes scripts/ directory in test coverage
• add tsx library for executing ts files from command line

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (3b55a85) to head (32a55ba).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main       #25   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           12        16    +4     
  Lines          201       271   +70     
  Branches        69        72    +3     
=========================================
+ Hits           201       271   +70     

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