en_UG and en_ZA instances

[etspaceman]

Changes Introduced

Added instances for en_UG and en_ZA

Applicable linked issues

#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 #39 into master will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master      #39   +/-   ##
=======================================
  Coverage   98.83%   98.84%           
=======================================
  Files          87       87           
  Lines         602      604    +2     
  Branches        1        0    -1     
=======================================
+ Hits          595      597    +2     
  Misses          7        7           

Impacted Files	Coverage Δ
src/main/scala/faker/Faker.scala	97.79% <ø> (ø)
src/main/scala/faker/ResourceLoader.scala	92.30% <ø> (ø)
src/main/scala/faker/SupportedLocales.scala	100.00% <100.00%> (ø)

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