Upgrade typescript, format the code and add license header

[gaiksaya]

Description

• Upgrade typescript to ^4.6.3
• Adds the missing license to infrastructure code
• Formats the code
• Removes unused and wildcard imports
• Rearranges the imports

IDE used: vscode

Issues Resolved

part of #55

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.73%. Comparing base (77e511d) to head (0a869a6).

Additional details and impacted files

@@             Coverage Diff              @@
##               main      #54      +/-   ##
============================================
- Coverage     76.75%   76.73%   -0.03%     
  Complexity      179      179              
============================================
  Files            52       52              
  Lines          1127     1126       -1     
  Branches         49       49              
============================================
- Hits            865      864       -1     
  Misses          239      239              
  Partials         23       23              

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