feat: allow installing project dependencies

[DamianGlowala]

This PR adds an installDependencies function to the API with a test (and some minor JSDoc improvements).

[codecov]

Codecov Report

Merging #72 (72cae5b) into main (7e045be) will increase coverage by 0.20%.
The diff coverage is 96.96%.

@@            Coverage Diff             @@
##             main      #72      +/-   ##
==========================================
+ Coverage   96.33%   96.53%   +0.20%     
==========================================
  Files           5        5              
  Lines         273      289      +16     
  Branches       33       34       +1     
==========================================
+ Hits          263      279      +16     
  Misses         10       10              

Impacted Files	Coverage Δ
src/api.ts	94.89% <96.96%> (+0.67%)	⬆️

[pi0]

Thanks 🚀