graphql support types

[marianoeramirez]

Basic support for Graphql Types.

• Added Country, Region, subregion and City type.

[codecov]

Codecov Report

Merging #281 (27f99ff) into master (bd0743e) will decrease coverage by 3.31%.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #281      +/-   ##
==========================================
- Coverage   94.72%   91.41%   -3.31%     
==========================================
  Files          40       44       +4     
  Lines        1687     1794     +107     
==========================================
+ Hits         1598     1640      +42     
- Misses         89      154      +65     

Files	Coverage Δ
src/cities_light/graphql/types.py	100.00% <100.00%> (ø)
src/cities_light/tests/graphql/schema.py	100.00% <100.00%> (ø)
src/cities_light/tests/graphql/test_model.py	100.00% <100.00%> (ø)
src/cities_light/tests/models.py	100.00% <100.00%> (ø)
src/cities_light/tests/test_migrations.py	62.50% <100.00%> (-37.50%)	⬇️

... and 13 files with indirect coverage changes