fix ark-circom version

[vivianjeng]

Problem

ark-circom v0.1.0 has been published https://crates.io/crates/ark-circom
so the cargo publish will find the crate in crates.io first

Details

We published mopro-ffi v0.1.0 but the cargo uses the ark-circom crate above
so we have to patch the ark-circom with

[patch.crates-io]
ark-circom = { git = "https://github.com/zkmopro/circom-compat.git", version = "0.1.0", branch = "wasm-delete" }

we will either

1. publish our ark-circom in zkmopro/circom-compat so that we can find the crate and specific version
2. find a way to use crate in github without showing the error messages
   e.g.

    Updating crates.io index
   Packaging mopro-ffi v0.1.0 (/Users/zhengyawen/Documents/GitHub/mopro/mopro-ffi)
    Updating crates.io index
error: failed to prepare local package for uploading

Caused by:
  no matching package named `rust-witness` found
  location searched: registry `crates-io`
  required by package `mopro-ffi v0.1.0 (/Users/zhengyawen/Documents/GitHub/mopro/mopro-ffi)`

in the next release

Acceptance criteria

Apps can install mopro-ffi without patching the ark-circom

Next steps (optional)

Remove the patch instructions in doc