Add missing @since tags, add description of Locality provider

[panilya]

No description provided.

[codecov-commenter]

Codecov Report

Merging #423 (9b7ac15) into main (0916019) will increase coverage by 0.02%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##               main     #423      +/-   ##
============================================
+ Coverage     93.93%   93.95%   +0.02%     
- Complexity     2005     2006       +1     
============================================
  Files           222      222              
  Lines          4021     4021              
  Branches        384      384              
============================================
+ Hits           3777     3778       +1     
+ Misses          150      146       -4     
- Partials         94       97       +3     

Impacted Files	Coverage Δ
src/main/java/net/datafaker/base/Locality.java	96.87% <ø> (ø)
src/main/java/net/datafaker/movie/FamilyGuy.java	100.00% <ø> (ø)
...java/net/datafaker/videogame/HeroesOfTheStorm.java	100.00% <ø> (ø)
.../main/java/net/datafaker/service/FakerContext.java	87.17% <0.00%> (+2.56%)	⬆️

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[bodiam]

Oh, nice one, appreciate it!