refactor: convert to typescript and upgrade Node.js versions

[MarshallOfSound]

Converts to typescript so that forge can just import the options type instead of duplicating it.

This is a breaking change per the commit message, the export is now a named export createDMG and the debug option has been removed because it makes no sense.

[codecov]

Codecov Report

Attention: Patch coverage is 44.64286% with 31 lines in your changes missing coverage. Please review.

Project coverage is 44.64%. Comparing base (ddc6db7) to head (eec8137).
Report is 2 commits behind head on main.

❗ Current head eec8137 differs from pull request most recent head 001ed46

Please upload reports for the commit 001ed46 to get more accurate results.

Files	Patch %	Lines
src/index.ts	44.64%	19 Missing and 12 partials ⚠️

❗ There is a different number of reports uploaded between BASE (ddc6db7) and HEAD (eec8137). Click for more details.

HEAD has 3 uploads less than BASE

| Flag | BASE (ddc6db7) | HEAD (eec8137) | |------|------|------| ||6|3|

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #178       +/-   ##
===========================================
- Coverage   75.43%   44.64%   -30.80%     
===========================================
  Files           1        1               
  Lines          57       56        -1     
  Branches        0       18       +18     
===========================================
- Hits           43       25       -18     
- Misses         14       19        +5     
- Partials        0       12       +12     

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[mahnunchik]

I'm looking forward to have it merged

[felixrieseberg]

I agree that we shouldn't change this in a TS refactor but this seems like an odd choice, —help usually ends in code 0