es, es_MX instances

[etspaceman]

Changes Introduced

Added es, ex_MX instances

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

@@           Coverage Diff           @@
##           master      #54   +/-   ##
=======================================
  Coverage   99.03%   99.04%           
=======================================
  Files          87       87           
  Lines         622      626    +4     
  Branches        1        0    -1     
=======================================
+ Hits          616      620    +4     
  Misses          6        6           

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

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