fix!: use correct temp dir in windows for cache

[RihanArfan]

Resolves #178

On Windows, the template cache is moved to the user's temp directory (%temp%/giget). This follows the correct OS conventions and allows Windows storage utils (Disk Clean-up, Storage Sense) to delete the cache to free storage if the user desires.

It will move the cache directory if oldDir && !newDir. This logic requires running resolve() to get both the Windows and other OS cache paths at the same time and existsSync() twice on Windows. We remove the migration code after some time in the future, and simplify to 437adc3 (#182)

[codecov]

Codecov Report

Attention: Patch coverage is 35.71429% with 9 lines in your changes missing coverage. Please review.

Project coverage is 45.60%. Comparing base (743c9ae) to head (df2f0e2).
Report is 56 commits behind head on main.

Files with missing lines	Patch %	Lines
src/_utils.ts	35.71%	9 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #182      +/-   ##
==========================================
- Coverage   54.63%   45.60%   -9.04%     
==========================================
  Files           7        6       -1     
  Lines         615      500     -115     
  Branches       47       48       +1     
==========================================
- Hits          336      228     -108     
+ Misses        278      272       -6     
+ Partials        1        0       -1     

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