✨ Add built-in unmapper support onto double

[dubzzz]

Category:

• ✨ Introduce new features
• 📝 Add or update documentation
• ✅ Add or update tests
• 🐛 Fix a bug
• 🏷️ Add or update types
• ⚡️ Improve performance
• Other(s): ...

Potential impacts:

• Generated values
• Shrink values
• Performance
• Typings
• Other(s): ...

[codesandbox-ci]

This pull request is automatically built and testable in CodeSandbox.

To see build info of the built libraries, click here or the icon next to each commit SHA.

Latest deployment of this branch, based on commit f00927d:

Sandbox	Source
Vanilla	Configuration
fast-check-examples	Configuration

[codecov]

Codecov Report

Merging #2200 (f00927d) into main (22491e2) will decrease coverage by 0.05%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #2200      +/-   ##
==========================================
- Coverage   95.84%   95.78%   -0.06%     
==========================================
  Files         200      200              
  Lines        4548     4557       +9     
  Branches      897      900       +3     
==========================================
+ Hits         4359     4365       +6     
- Misses        185      188       +3     
  Partials        4        4              

Flag	Coverage Δ
unit-tests	95.78% <100.00%> (-0.06%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/arbitrary/_next/doubleNext.ts	100.00% <100.00%> (ø)
src/arbitrary/_internals/ArrayInt64Arbitrary.ts	94.31% <0.00%> (-3.41%)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 22491e2...f00927d. Read the comment docs.