Endpointed Assertion and [WIP] Print synthesis

[davidbiancolin]

Mostly a code dump from DESSERT with a few changes:

1. Support target-transforms that add new target IO that should be bound to custom endpoints

   • These can be user provided (IE. you can register your fault injection pass and bind it to your fault injection endpoint without needing to touch MIDAS code).
   • See AddedTargetIoAnnotation

2. Using above, assert and print widgets are instantiated as endpoints

   • QoR will be worse as tokens are encoded only after passing through a token channel
     • Fix with smarter channel generation.

Other changes:

• Promote BRAMQueue from FireSim to MIDAS with a bugfix.

TODOs:

• [x] Bring up print endpoint
• [x] Clean up address assignment for DMA-enabled widgets
  • Fix with final print synthesis bring up
• [x] Clean up exclusions on assertions & prints -> move to firesim and select appropriately
• [x] Split AssertPass into Print and Assertion passes.
  • Fix with final print synthesis bring up
• [x] Remove dead dessert code
  • Fix with final print synthesis bring up

RFC:

1. Should print synthesis remove the existing unsynthesized print?(No, but enable with a flag?)
   • Punt to print bring up
2. Ditto, assertions. (Yes, but disable with a flag?)
   • Open an issue if current behavior (yes) is not what we want.