feat(locale): add Luxembourg (French) locale

[DavidMoraisFerreira]

Adds Luxembourgish locale.

Please note that I had to commit using --no-verify, as lint-staged kept failing with "no valid configuration found."

[ST-DDT]

Please note that I had to commit using --no-verify, as lint-staged kept failing with "no valid configuration found."

You probably have to remove the git now obsolete commit hooks files: rm -rf .git/hooks.

---

Please run pnpm run test -u to update the test snapshots.

[codecov]

Codecov Report

Merging #1693 (35c0512) into next (2a06b6a) will decrease coverage by 0.00%.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##             next    #1693      +/-   ##
==========================================
- Coverage   99.63%   99.63%   -0.01%     
==========================================
  Files        2249     2262      +13     
  Lines      240573   240707     +134     
  Branches     1095     1095              
==========================================
+ Hits       239698   239825     +127     
- Misses        854      861       +7     
  Partials       21       21              

Impacted Files	Coverage Δ
src/locale/fr_LU.ts	100.00% <100.00%> (ø)
src/locales/fr_LU/cell_phone/formats.ts	100.00% <100.00%> (ø)
src/locales/fr_LU/cell_phone/index.ts	100.00% <100.00%> (ø)
src/locales/fr_LU/index.ts	100.00% <100.00%> (ø)
src/locales/fr_LU/internet/domain_suffix.ts	100.00% <100.00%> (ø)
src/locales/fr_LU/internet/index.ts	100.00% <100.00%> (ø)
src/locales/fr_LU/location/city.ts	100.00% <100.00%> (ø)
src/locales/fr_LU/location/city_name.ts	100.00% <100.00%> (ø)
src/locales/fr_LU/location/index.ts	100.00% <100.00%> (ø)
src/locales/fr_LU/location/postcode.ts	100.00% <100.00%> (ø)
... and 5 more