Build Project Structure.

New: base classes and modules.
New: unit tests.

core/base/ResultBase.py

@@ -0,0 +1,2 @@
+class ResultBase():
+    pass

core/base/SimulationBase.py

@@ -0,0 +1,9 @@
+import abc
+
+
+class SimulationBase():
+    @abc.abstractclassmethod
+    def run(self):
+        pass
+
+    pass

core/base/__init__.py

@@ -0,0 +1,2 @@
+from .ResultBase import ResultBase
+from .SimulationBase import SimulationBase