feat(wasm-utxo): add musig2 crate as dependency

Add the musig2 crate and secp256k1 dependencies to support MuSig2
signature aggregation. Configure getrandom crate with js feature.
Also added a compiler flag to fix secp256k1-sys compilation with
strict compilers.

Issue: BTC-2652

Co-authored-by: llm-git <[email protected]>

Author: OttoAllmendinger

packages/wasm-utxo/Cargo.lock

@@ -18,6 +18,9 @@ wasm-bindgen = "0.2"
 js-sys = "0.3"
 miniscript = { git = "https://github.com/BitGo/rust-miniscript", tag = "miniscript-12.3.4-opdrop" }
 bech32 = "0.11"
+secp256k1 = { version = "0.31.1" }
+musig2 = { version = "0.3.1" }
+getrandom = { version = "0.2", features = ["js"] }
 
 [dev-dependencies]
 base64 = "0.22.1"

packages/wasm-utxo/Cargo.toml

@@ -2,6 +2,9 @@ WASM_PACK = wasm-pack
 WASM_OPT = wasm-opt
 WASM_PACK_FLAGS = --no-pack --weak-refs
 
+# Fix for secp256k1-sys compilation with strict compilers
+export CFLAGS = -Wno-error=implicit-function-declaration
+
 ifdef WASM_PACK_DEV
 	WASM_PACK_FLAGS += --dev
 endif