iang/arctic: Library and benchmark program for Arctic and Shine

Ian Goldberg 6b436ac7c0 Use references, not copies, in the inner loop of gen		3 mesi fa
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bin	a4f00a2061 cargo fmt	2 mesi fa
arctic.rs	a4f00a2061 cargo fmt	2 mesi fa
lagrange.rs	752e61a8c3 We never use the Lagrange interpolate function, but we keep it for completeness	2 mesi fa
lib.rs	cfaab14f83 cargo fmt	2 mesi fa
shine.rs	6b436ac7c0 Use references, not copies, in the inner loop of gen	2 mesi fa