Add UTMCoordinate class

- the class is a utility to abstract working with latitude-longitude
  coordinates in their UTM representation (~ "cartesian plane")
- the class's .x and .y properties enable working with simple x-y
  coordinates where the (0, 0) origin is the lower-left of a city's
  viewport

setup.cfg

@@ -149,6 +149,8 @@ per-file-ignores =
         S311,
         # Shadowing outer scopes occurs naturally with mocks.
         WPS442,
+        # Test names may be longer than 40 characters.
+        WPS118,
         # Modules may have many test cases.
         WPS202,WPS204,WPS214,
         # Do not check for Jones complexity in the test suite.
@@ -167,6 +169,9 @@ per-file-ignores =
 # Source: https://en.wikipedia.org/wiki/Cyclomatic_complexity#Limiting_complexity_during_development
 max-complexity = 10
 
+# Allow more than wemake-python-styleguide's 7 methods per class.
+max-methods = 12
+
 # Comply with black's style.
 # Source: https://github.com/psf/black/blob/master/docs/the_black_code_style.md#line-length
 max-line-length = 88
@@ -238,6 +243,8 @@ ignore_missing_imports = true
 ignore_missing_imports = true
 [mypy-sqlalchemy.*]
 ignore_missing_imports = true
+[mypy-utm.*]
+ignore_missing_imports = true
 
 
 [pylint.FORMAT]