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

@@ -1170,9 +1170,9 @@ class MADS(AbstractOperation):
 
     def swap_io(self) -> None:
         self._input_ports = [
-            self._input_ports[1],
             self._input_ports[0],
             self._input_ports[2],
+            self._input_ports[1],
         ]
         for i, p in enumerate(self._input_ports):
             p._index = i