iang/arctic: Library and benchmark program for Arctic and Shine @ 781bb6e9f467144517c24c7031077e6372ec587e

Ian Goldberg 781bb6e9f4 combinecomm_noverify becomes agg to match the paper		пре 11 месеци
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bin	4a5cb38b30 gen now returns (Scalar, RistrettoPoint) to match the paper	пре 10 месеци
arctic.rs	781bb6e9f4 combinecomm_noverify becomes agg to match the paper	пре 10 месеци
lagrange.rs	752e61a8c3 We never use the Lagrange interpolate function, but we keep it for completeness	пре 10 месеци
lib.rs	cfaab14f83 cargo fmt	пре 10 месеци
shine.rs	781bb6e9f4 combinecomm_noverify becomes agg to match the paper	пре 10 месеци