Embed spartan_wasm.wasm & Remove circuit artifacts from lib

[DanTehrani]

• Embed spartan_wasm bytes into a typescript file using embed_wasm_bytes.ts at build time.
• Removed circuit artifacts from the lib to make the package small enough.
  • (Previously, if the lib was used in node.js then the user could simply pass in the default config to use the circuit artifacts packaged inside the lib. With this update, even if the lib is used in a node.js env, the lib user must download the circuit and wasm files and specify the path to them when instantiating prover/verifier.
  • This results in
    • A simpler build process
    • A smaller package (w/ the circuit artifacts included, the package resulted in > 100MB and without it it’s 2MB)
• Log warning message when default config is used
  • https://github.com/personaelabs/spartan-ecdsa/blob/be0df0a8a3b8571b287c22f58451659026039c73/packages/lib/src/core/membership_prover.ts#L36
  • https://github.com/personaelabs/spartan-ecdsa/blob/be0df0a8a3b8571b287c22f58451659026039c73/packages/lib/src/core/membership_verifier.ts#L23

[DanTehrani]

@lsankar4033 Could u review the changes I wrote about here?
Easier/better designs and suggestions are welcome!

[lsankar4033]

oh also just a note that the failing membership tests pass, but console.error in test logs:

console.error
  panicked at 'called `Result::unwrap()` on an `Err` value: Custom("elliptic curve point encoding error")', packages/spartan_wasm/
wasm.rs:60:23

  Stack:

  Error: 
      at imports.wbg.__wbg_new_abda76e883ba8a5f (/Users/lakshmansankar/src/spartan-ecdsa/packages/lib/src/wasm/wasm.js:361:21)
      at null.<anonymous> (wasm://wasm/001e7302:1:387360)
      at null.<anonymous> (wasm://wasm/001e7302:1:445282)
      at null.<anonymous> (wasm://wasm/001e7302:1:417454)
      at null.<anonymous> (wasm://wasm/001e7302:1:431450)
      at null.<anonymous> (wasm://wasm/001e7302:1:442714)
      at null.<anonymous> (wasm://wasm/001e7302:1:438764)
      at null.<anonymous> (wasm://wasm/001e7302:1:441875)
      at null.<anonymous> (wasm://wasm/001e7302:1:433946)
      at null.<anonymous> (wasm://wasm/001e7302:1:289649)
      at null.<anonymous> (wasm://wasm/001e7302:1:431007)
      at Object.verify (/Users/lakshmansankar/src/spartan-ecdsa/packages/lib/src/wasm/wasm.js:122:14)
      at MembershipVerifier.<anonymous> (/Users/lakshmansankar/src/spartan-ecdsa/packages/lib/src/core/membership_verifier.ts:46:2

      at Generator.next (<anonymous>)
      at fulfilled (/Users/lakshmansankar/src/spartan-ecdsa/packages/lib/src/core/membership_verifier.ts:28:58)

Think this is fine for now as tests properly pass, but we'll probably need to suppress these when we set up CI

[DanTehrani]

@lsankar4033 Good point on console.error. Logging can be controlled by calling/not calling wasm.init_panic_hook(). (We can later disable it for CI)

[lsankar4033]

all lgtm!