add plonk-wasm

[martyall]

Move over plonk-wasm package from mina

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 3559 lines in your changes missing coverage. Please review.

Project coverage is 68.90%. Comparing base (c54f985) to head (07ee3a7).

Files with missing lines	Patch %	Lines
plonk-wasm/src/plonk_verifier_index.rs	0.00%	673 Missing ⚠️
plonk-wasm/src/plonk_proof.rs	0.00%	518 Missing ⚠️
plonk-wasm/src/srs.rs	0.00%	246 Missing ⚠️
plonk-wasm/src/pasta_fp_plonk_index.rs	0.00%	201 Missing ⚠️
plonk-wasm/src/wasm_ocaml_serde/ser.rs	0.00%	200 Missing ⚠️
plonk-wasm/src/wasm_ocaml_serde/de.rs	0.00%	195 Missing ⚠️
plonk-wasm/src/pasta_fq_plonk_index.rs	0.00%	178 Missing ⚠️
plonk-wasm/src/arkworks/pasta_fp.rs	0.00%	166 Missing ⚠️
plonk-wasm/src/arkworks/pasta_fq.rs	0.00%	166 Missing ⚠️
plonk-wasm/src/oracles.rs	0.00%	142 Missing ⚠️
... and 13 more

Additional details and impacted files

@@                         Coverage Diff                         @@
##           dw/merge-back-develop-in-master    #2876      +/-   ##
===================================================================
- Coverage                            72.22%   68.90%   -3.32%     
===================================================================
  Files                                  255      278      +23     
  Lines                                60449    64008    +3559     
===================================================================
+ Hits                                 43658    44106     +448     
- Misses                               16791    19902    +3111     

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[martyall]

@dannywillems tests are passing but lint check is failing, e.g.

error: `extern` fn uses type `ark_ff::Fp<ark_ff::MontBackend<mina_curves::pasta::fields::FqConfig, 4>, 4>`, which is not FFI-safe
   --> plonk-wasm/src/projective.rs:147:9
    |
147 |         WasmPastaFp,
    |         ^^^^^^^^^^^ not FFI-safe
    |
    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
    = note: this struct has unspecified layout

Since there was no clippy check in mina, this could have been present for quite a while. The WasmPastFp type does have a #[repr(C)] attribute, but it wraps a newtype in arkworks that has no such instance. Clearly things are working anyway, what do you think we should do?