Resolve "Generate Schedule"

• Adds latencies to ports and methods for interacting with them to operation
• Adds Schema class and construction with ASAP scheduling

Closes #30 (closed)

b_asic/operation.py

@@ -6,7 +6,6 @@ TODO: More info.
 from b_asic.signal import Signal
 from b_asic.port import SignalSourceProvider, InputPort, OutputPort
 from b_asic.graph_component import GraphComponent, AbstractGraphComponent, Name
-import re
 import itertools as it
 from math import trunc
 import collections