feat: Add SigSocket integration with WASM client and JavaScript bridge for sign requests

wasm_app/Cargo.toml

@@ -12,10 +12,11 @@ web-sys = { version = "0.3", features = ["console"] }
 js-sys = "0.3"
 kvstore = { path = "../kvstore" }
 hex = "0.4"
+base64 = "0.22"
 wasm-bindgen = { version = "0.2", features = ["serde-serialize"] }
 gloo-utils = "0.1"
 
-# 
+#
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 rhai = { version = "1.16", features = ["serde"] }
@@ -23,6 +24,7 @@ wasm-bindgen-futures = "0.4"
 once_cell = "1.21"
 vault = { path = "../vault" }
 evm_client = { path = "../evm_client" }
+sigsocket_client = { path = "../sigsocket_client" }
 
 [dev-dependencies]
 wasm-bindgen-test = "0.3"