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`UInt32` trait, SHA256 implementation, `from_const` for `Wires`, and others
This PR adds
- A preliminary
UInt32trait - A naive implementation of
UInt32fromBoolean - An implementation of SHA256 that is generic over UInt32
from_constfunction for different data traits (addresses #4 )
TODO:
- An optimized implementation of
UInt32using lookups inrcc-halo2