Add en_CA instances, StringRegexPart

[etspaceman]

Changes Introduced

Adds support for the en_CA Locale.

Applicable linked issues

Makes progress towards #8

Checklist (check all that apply)

• This change maintains backwards compatibility
• I have introduced tests for all new features and changes
• I have added documentation covering all new features and changes
• This pull-request is ready for review

[codecov]

Codecov Report

Merging #18 into master will decrease coverage by 0.18%.
The diff coverage is 89.47%.

@@            Coverage Diff             @@
##           master      #18      +/-   ##
==========================================
- Coverage   99.37%   99.18%   -0.19%     
==========================================
  Files          86       86              
  Lines         477      491      +14     
==========================================
+ Hits          474      487      +13     
- Misses          3        4       +1     

Impacted Files	Coverage Δ
src/main/scala/faker/ResourceLoader.scala	89.47% <85.71%> (-10.53%)	⬇️
src/main/scala/faker/Faker.scala	97.89% <100.00%> (+0.02%)	⬆️
src/main/scala/faker/StringGenBuilder.scala	100.00% <100.00%> (ø)
src/main/scala/faker/syntax/string.scala	100.00% <100.00%> (ø)
...main/scala/faker/internet/PrivateIpV4Address.scala	100.00% <0.00%> (+8.33%)	⬆️

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