Add slack time scheduling, redid earliest deadline, added max-fan-out and hybrid scheduler, also added example

Also added a couple of tests to reach full test coverage for all core operations.

Closes: #285 (closed) #284 (closed) #281 (closed)

Branched from !469 (merged) so merge that first, I can then rebase if you want to.

b_asic/core_operations.py

@@ -1677,6 +1677,7 @@ class DontCare(AbstractOperation):
             output_count=1,
             name=name,
             latency_offsets={"out0": 0},
+            execution_time=0,
         )
 
     @classmethod
@@ -1753,6 +1754,7 @@ class Sink(AbstractOperation):
             output_count=0,
             name=name,
             latency_offsets={"in0": 0},
+            execution_time=0,
         )
 
     @classmethod
@@ -1777,28 +1779,14 @@ class Sink(AbstractOperation):
     ) -> tuple[tuple[tuple[float, float], ...], tuple[tuple[float, float], ...]]:
         # Doc-string inherited
         return (
-            (
-                (-0.5, 0),
-                (-0.5, 1),
-                (-0.25, 1),
-                (0, 0.5),
-                (-0.25, 0),
-                (-0.5, 0),
-            ),
-            (
-                (-0.5, 0),
-                (-0.5, 1),
-                (-0.25, 1),
-                (0, 0.5),
-                (-0.25, 0),
-                (-0.5, 0),
-            ),
+            ((0, 0), (0, 1), (0.25, 1), (0.5, 0.5), (0.25, 0), (0, 0)),
+            ((0, 0), (0, 1), (0.25, 1), (0.5, 0.5), (0.25, 0), (0, 0)),
         )
 
     def get_input_coordinates(self) -> tuple[tuple[float, float], ...]:
         # doc-string inherited
-        return tuple()
+        return ((0, 0.5),)
 
     def get_output_coordinates(self) -> tuple[tuple[float, float], ...]:
         # doc-string inherited
-        return ((0, 0.5),)
+        return tuple()