As discussed in https://github.com/arkworks-rs/circom-compat/issues/72
it's not currently possible to load parameters from their binary.

This would help a lot in browser envoiroments where JS can take care of
handling the read and we just open the door in the WASM module to allow
to load new ones from the bytes read.

The commit adds a change in the tests which now load from binary instead
of reading from file. This ensures that the reading is indeed working as
expected although we rely on a different fn from `wasmer`.

Closes #72