Add functionality for drawing folium.Maps

- this code is not unit-tested due to the complexity involving
  interactive `folium.Map`s => visual checks give high confidence

setup.cfg

@@ -92,7 +92,7 @@ extend-ignore =
     # Google's Python Style Guide is not reStructuredText
     # until after being processed by Sphinx Napoleon.
     # Source: https://github.com/peterjc/flake8-rst-docstrings/issues/17
-    RST201,RST203,RST301,
+    RST201,RST203,RST210,RST213,RST301,
     # String constant over-use is checked visually by the programmer.
     WPS226,
     # Allow underscores in numbers.
@@ -101,6 +101,10 @@ extend-ignore =
     WPS305,
     # Classes should not have to specify a base class.
     WPS306,
+    # Let's be modern: The Walrus is ok.
+    WPS332,
+    # Let's not worry about the number of noqa's.
+    WPS402,
     # Putting logic into __init__.py files may be justified.
     WPS412,
     # Allow multiple assignment, e.g., x = y = 123
@@ -127,8 +131,6 @@ per-file-ignores =
         WPS114,WPS118,
         # Revisions may have too many expressions.
         WPS204,WPS213,
-        # Too many noqa's are ok.
-        WPS402,
     noxfile.py:
         # Type annotations are not strictly enforced.
         ANN0, ANN2,
@@ -136,13 +138,17 @@ per-file-ignores =
         WPS202,
         # TODO (isort): Remove after simplifying the nox session "lint".
         WPS213,
-        # The noxfile is rather long => allow many noqa's.
-        WPS402,
     src/urban_meal_delivery/configuration.py:
         # Allow upper case class variables within classes.
         WPS115,
+    src/urban_meal_delivery/db/customers.py:
+        # The module is not too complex.
+        WPS232,
+    src/urban_meal_delivery/db/restaurants.py:
+        # The module is not too complex.
+        WPS232,
     src/urban_meal_delivery/forecasts/decomposition.py:
-        # The module does not have a high cognitive complexity.
+        # The module is not too complex.
         WPS232,
     src/urban_meal_delivery/forecasts/timify.py:
         # No SQL injection as the inputs come from a safe source.
@@ -247,8 +253,14 @@ single_line_exclusions = typing
 [mypy]
 cache_dir = .cache/mypy
 
+[mypy-folium.*]
+ignore_missing_imports = true
+[mypy-matplotlib.*]
+ignore_missing_imports = true
 [mypy-nox.*]
 ignore_missing_imports = true
+[mypy-numpy.*]
+ignore_missing_imports = true
 [mypy-packaging]
 ignore_missing_imports = true
 [mypy-pandas]