Improved benchmarking infrastructure (do not merge)

[webmaster128]

This makes a bunch of improvements to the benchmarking of cosmwasm-vm, such as running all cache tests with two different contracts as well as upgrading criterion.

It also adds a benchmark to a contract project in which it compared the Wasm performance to the native performance for some compute heavy operations: argon3 and BLS12-318 signature verification. This part is a bit problematic since the schema generator and the benchmarking create compiler isssues together.

A few first results is that for the chosen benchmarks, the Wasm runs 10x-20x slower than native for the given tasks. A reason might be simd optimizations on native or assembly optimizations. More tasks will be needed. The other observation is that wasm-opt can produce results that execute up to 24% faster by using -O4 instead of -Os.

wasm-opt args	Drand verify G1	Drand verify G2
before wasm-opt	35.875 ms	29.642 ms
-Os	37.978 ms	30.900 ms
-O2	32.990 ms	27.200 ms
-O4	28.871 ms	24.081 ms

[webmaster128]

Some good stuff in here but nothing actually important or very specific. Can always rebuild as needed.