Add and Update Documentation for various classes and methods

[richtwin567]

• Contact class

• _PhoneNumber class

• ContactPlatform enum

• ContactType enum

• Department enum

• Feature class

• FeatureCollection class

• GeoJsonObject class

• GeoJsonType enum

• GeoJsonGeometryObject class

• GeoJsonGeometryCollection class

• GeoJsonGeometryType enum

• GeoJsonLineString class

• GeoJsonLinearRing class

• GeoJsonMultiLineString class

• GeoJsonMultiPoint class

• GeoJsonMultiPolygon class

• GeoJsonPoint class

• GeoJsonPolygon class

• CampusMap class

• GeoJsonPosition class

• Properties class

• ThemeModel class

• ThemePreference class

• VCard class

• LinePoint class and drawPathFromPoints function in svg_model.dart

• StatefulPopupRoute class

• SlideUpPageRoute class

• handle_heroku_requests.dart

• AppTheme class

• requestPermission function

• precache_rive.dart

• social_media_contact_share.dart

• string_to_enum.dart

• RiveIconButton class

• ThemeChooserDialog class

• arrowed_tooltip.dart

• DataWindow class