feat: Add makePulumiCallback

[simenandre]

Add a specialized callback function to make it easer to connect with Pulumi.

[codecov]

Codecov Report

Merging #5 (2a36b02) into main (7eccaaa) will decrease coverage by 10.87%.
The diff coverage is 0.00%.

@@             Coverage Diff             @@
##             main       #5       +/-   ##
===========================================
- Coverage   51.66%   40.78%   -10.88%     
===========================================
  Files           6        6               
  Lines          60       76       +16     
  Branches       14       18        +4     
===========================================
  Hits           31       31               
- Misses         29       45       +16     

Impacted Files	Coverage Δ
src/index.ts	0.00% <0.00%> (ø)

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