feat: introduce resolveLocaleData utility function

[ST-DDT]

Extracted from #3189 for future discussion
Blocked by #3818

• feat: de-proxy locale access #3189
• feat: add first standalone module functions #3818

---

Adds the resolveLocaleData utility function.

Intended for users of our library to check whether their custom data are present.

@example
resolveLocaleData(fakerCore, 'food', 'fruit'); // ['apple', 'apricot', ...]
arrayElement(fakerCore, resolveLocaleData(fakerCore, 'food', 'fruit')); // 'cherry'

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.84%. Comparing base (65e54b5) to head (b8a9eaf).

Additional details and impacted files

@@                 Coverage Diff                  @@
##           feat/samfn/utils    #3819      +/-   ##
====================================================
- Coverage             98.90%   98.84%   -0.07%     
====================================================
  Files                   902      902              
  Lines                  3107     3114       +7     
  Branches                556      573      +17     
====================================================
+ Hits                   3073     3078       +5     
- Misses                   30       32       +2     
  Partials                  4        4              

Files with missing lines	Coverage Δ
src/utils/registry.ts	100.00% <ø> (ø)
src/utils/resolve-locale-data.ts	100.00% <100.00%> (ø)

... and 23 files with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[ST-DDT]

This is now obsolete since we will continue to use the LocaleProxy, which makes it easier to call.

• Support older browsers without Proxy #3155 (comment)