Upgrade Wasmer to 2.2 (CosmWasm v1.0.0-beta6)

[webmaster128]

This integrates the PR branch from CosmWasm/cosmwasm#1224.

Feel free to use this for testing. But be warned, heavy rebasing is going to happen here.

With the builders version 0009 the .dylib is a universal macOS library that works on both Intel and M1 Macs:

$ file api/libwasmvm.dylib 
api/libwasmvm.dylib: Mach-O universal binary with 2 architectures: [x86_64:Mach-O 64-bit dynamically linked shared library x86_64] [arm64]
api/libwasmvm.dylib (for architecture x86_64):  Mach-O 64-bit dynamically linked shared library x86_64
api/libwasmvm.dylib (for architecture arm64):   Mach-O 64-bit dynamically linked shared library arm64

When I check out this branch on a M1 machines, all make test tests pass except for the GetMetrics tests because 7.5% less memory is needed on ARM for whatever reason. All other tests pass.