Add precompilation workload

[theogf]

Fixes #52

Speed up getting into fzf. From a quick estimation it looks like it goes from ~4s to ~2s for the first run.

[codecov]

Codecov Report

❌ Patch coverage is 96.55172% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 50.00%. Comparing base (4112cbc) to head (21244f3).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/precompilation.jl	96.55%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #67      +/-   ##
==========================================
+ Coverage   46.10%   50.00%   +3.89%     
==========================================
  Files           8        9       +1     
  Lines         347      376      +29     
==========================================
+ Hits          160      188      +28     
- Misses        187      188       +1     

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