refactor!: remove dynamic locale switching support

[ST-DDT]

Closes #1340

• Remove locale switching support #1340

Removes the ability to change the locale on existing Faker instances.

New Features

• Access locales directly from the main index file (en_AU_ocker)
• Access to all locales at once (allLocales.en_AU_ocker)
• Access faker instances directly from the main index file (fakerEN_AU_ocker)
• Access to all faker instances at once (allFakers.en_AU_ocker)
• Useful locale fallback (en_AU_ocker -> en_AU -> en ( -> en if not already present ( -> global later))

Changed Features

• The main faker instance is now en only

Lost Features

• Changing locales dynamically
• Getting a random locale from the faker instance (and switch to that)
• UsableLocale, UsedLocale, KnownLocale types

ToDos for later PRs

• Extract global locale data into own locale (Add global locale #1441)
• Actually throw for missing locale entries (Introduce a way to get details about missing locale data when using them #893)
• findFaker(locale: string): Faker method ???

[codecov]

Codecov Report

Merging #1735 (b166fff) into next (a4d5203) will decrease coverage by 0.02%.
The diff coverage is 91.18%.

❗ Current head b166fff differs from pull request most recent head f3b1484. Consider uploading reports for the commit f3b1484 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             next    #1735      +/-   ##
==========================================
- Coverage   99.64%   99.62%   -0.02%     
==========================================
  Files        2355     2356       +1     
  Lines      236763   236565     -198     
  Branches     1158     1192      +34     
==========================================
- Hits       235919   235678     -241     
- Misses        822      865      +43     
  Partials       22       22              

Impacted Files	Coverage Δ
src/faker.ts	87.64% <71.71%> (-7.83%)	⬇️
src/index.ts	100.00% <100.00%> (ø)
src/locale/af_ZA.ts	100.00% <100.00%> (ø)
src/locale/ar.ts	100.00% <100.00%> (ø)
src/locale/az.ts	100.00% <100.00%> (ø)
src/locale/cz.ts	100.00% <100.00%> (ø)
src/locale/de.ts	100.00% <100.00%> (ø)
src/locale/de_AT.ts	100.00% <100.00%> (ø)
src/locale/de_CH.ts	100.00% <100.00%> (ø)
src/locale/dv.ts	100.00% <100.00%> (ø)
... and 58 more

[Shinigami92]

@matthewmayer do you have any more reviews you want to have into the PR before merging?
Otherwise pls approve so your hard blocking change request goes away

[matthewmayer]

@matthewmayer do you have any more reviews you want to have into the PR before merging? Otherwise pls approve so your hard blocking change request goes away

sorry my bad i didnt realise that blocked merge. approved now.

I have some further ideas for improving migration guide but that can be saved for a seperate PR.

[Shinigami92]

🎉

I will try to find some time the next days to address #1748 again
Thanks to all of you to bring this forward
This was the most huge "bloker" / "stone" in our way to proceed to a new future of Faker 🙂