feat: add simplified building and city to city model structure

hub/city_model_structure/simplified_building.py

@@ -0,0 +1,42 @@
+from typing import Union
+
+
+class SimplifiedBuilding:
+  """
+  SimplifiedBuilding class
+  """
+  def __init__(self, name, total_floor_area=None, year_of_construction=None, function=None, city=None):
+    self._name = name
+    self._total_floor_area = total_floor_area
+    self._year_of_construction = year_of_construction
+    self._function = function
+    self._city = city
+    self._type = 'building'
+
+  @property
+  def name(self):
+    return self._name
+
+  @property
+  def total_floor_area(self):
+    return self._total_floor_area
+
+  @property
+  def year_of_construction(self):
+    return self._year_of_construction
+
+  @property
+  def function(self) -> Union[None, str]:
+    return self._function
+
+  @property
+  def type(self):
+    return self._type
+
+  @property
+  def city(self):
+    return self._city
+
+  @city.setter
+  def city(self, value):
+    self._city = value

hub/city_model_structure/simplified_city.py

@@ -0,0 +1,31 @@
+from typing import List
+from hub.city_model_structure.simplified_building import SimplifiedBuilding
+
+class SimplifiedCity:
+  """
+  SimplifiedCity class
+  """
+
+  def __init__(self):
+    self._name = "Montreal Metropolitan Area"
+    self._buildings = []
+
+  @property
+  def name(self):
+    return self._name
+
+  @name.setter
+  def name(self, value):
+    if value is not None:
+      self._name = str(value)
+
+  @property
+  def buildings(self) -> List[SimplifiedBuilding]:
+    return self._buildings
+
+  def add_city_object(self, new_city_object):
+    if new_city_object.type == 'building':
+      self._buildings.append(new_city_object)
+      new_city_object.city = self
+    else:
+      raise NotImplementedError(f"Type {new_city_object.type} is not supported")