Module gates

Module that contains the main API for creating and working with circuits. gates is misleading because we currently only use one custom gate throughout.

Re-exports

• pub use flex_gate::GateChip;
• pub use flex_gate::GateInstructions;
• pub use range::RangeChip;
• pub use range::RangeInstructions;

Modules

• circuit
  Module providing tools to create a circuit using our gates
• flex_gate
  Module implementing our simple custom gate and common functions using it
• range
  Module using a single lookup table for range checks