added model_scenario

cara/model_scenarios.py

@@ -0,0 +1,29 @@
+from cara import models
+
+exposure_models = models.ExposureModel(
+    concentration_model=models.ConcentrationModel(
+        room=models.Room(volume=45, humidity=0.5),
+        ventilation=models.SlidingWindow(
+            active=models.PeriodicInterval(period=120, duration=120),
+            inside_temp=models.PiecewiseConstant((0, 24), (293, )),
+            outside_temp=models.PiecewiseConstant((0, 24), (283,)),
+            window_height=1.6, opening_length=0.2,
+        ),
+        infected=models.InfectedPopulation(
+            number=1,
+            presence=models.SpecificInterval(((0, 4), (5, 9))),
+            mask=False,
+            mask=models.Mask.types['Type I'],
+            activity=models.Activity.types['Seated'],
+            virus=models.Virus.types['SARS_CoV_2_B117'],
+            expiration=models.Expiration.types['Breathing']
+        )
+    ),
+    exposed=models.Population(
+        number=2,
+        presence=models.SpecificInterval(((0, 4), (5, 9))),
+        activity=models.Activity.types['Seated'],
+        mask=models.Mask.types['Type I']
+    ),
+    
+)

cara/plot_output.py

@@ -0,0 +1,3 @@
+from cara import *
+
+