feat: implement browser extension UI with WebAssembly integration

wasm_app/Cargo.toml

@@ -0,0 +1,30 @@
+[package]
+name = "wasm_app"
+version = "0.1.0"
+edition = "2021"
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+web-sys = { version = "0.3", features = ["console"] }
+kvstore = { path = "../kvstore" }
+hex = "0.4"
+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"] }
+wasm-bindgen-futures = "0.4"
+once_cell = "1.21"
+vault = { path = "../vault" }
+evm_client = { path = "../evm_client" }
+
+[dev-dependencies]
+wasm-bindgen-test = "0.3"
+
+[target.'cfg(target_arch = "wasm32")'.dependencies]
+getrandom = { version = "0.3", features = ["wasm_js"] }
+getrandom_02 = { package = "getrandom", version = "0.2.16", features = ["js"] }