Geometry Operations Enhancement (#122)

* updating exclusion domain
- update sample/ is_inside
- create tests

* difference fixes
- random iteration list for sample

* created Intersection

* created a Difference domain

* unittest

* docstrings and minor fixes

* Refacotring Geometries
- added OperationInterface
- redid test cases
- edited Union, Intersect, Exclusion, and Difference
to inherit from OperationInterface
- simplified Union, Intersect, Exclusion, and Difference

* rm lighting logs

---------

Co-authored-by: Dario Coscia <dariocoscia@cli-10-110-16-239.WIFIeduroamSTUD.units.it>

pina/geometry/location.py

@@ -14,4 +14,17 @@ class Location(metaclass=ABCMeta):
         Abstract method for sampling a point from the location. To be
         implemented in the child class.
         """
-        pass
+        pass
+
+    @abstractmethod
+    def is_inside(self, point, check_border=False):
+        """
+        Abstract method for checking if a point is inside the location. To be
+        implemented in the child class.
+
+        :param tensor point: A tensor point to be checked.
+        :param bool check_border: a boolean that determines whether the border
+            of the location is considered checked to be considered inside or
+            not. Defaults to False.
+        """
+        pass