fix: use erc6492 lib and remove dedicated ERC-1271 verification logic

.github/workflows/ci.yaml

@@ -54,9 +54,6 @@ jobs:
           profile: default
           override: true
 
-      - name: Install Foundry
-        uses: foundry-rs/foundry-toolchain@v1
-
       - uses: Swatinem/rust-cache@v2
 
       - uses: taiki-e/install-action@v1

relay_rpc/Cargo.toml

@@ -5,19 +5,11 @@ edition = "2021"
 license = "Apache-2.0"
 
 [features]
+default = ["cacao"]
 cacao = [
-    "dep:k256",
-    "dep:sha3",
     "dep:alloy-provider",
-    "dep:alloy-transport",
-    "dep:alloy-transport-http",
-    "dep:alloy-rpc-types",
-    "dep:alloy-json-rpc",
-    "dep:alloy-json-abi",
-    "dep:alloy-sol-types",
     "dep:alloy-primitives",
-    "dep:alloy-node-bindings",
-    "dep:alloy-contract"
+    "dep:erc6492",
 ]
 
 [dependencies]
@@ -42,28 +34,16 @@ chrono = { version = "0.4", default-features = false, features = [
 regex = "1.7"
 once_cell = "1.16"
 jsonwebtoken = "8.1"
-k256 = { version = "0.13", optional = true }
-sha3 = { version = "0.10", optional = true }
 sha2 = { version = "0.10.6" }
 url = "2"
 alloy-provider = { git = "https://github.com/alloy-rs/alloy.git", rev = "d68a6b7", optional = true }
-alloy-transport = { git = "https://github.com/alloy-rs/alloy.git", rev = "d68a6b7", optional = true }
-alloy-transport-http = { git = "https://github.com/alloy-rs/alloy.git", rev = "d68a6b7", optional = true }
-alloy-rpc-types = { git = "https://github.com/alloy-rs/alloy.git", rev = "d68a6b7", optional = true }
-alloy-json-rpc = { git = "https://github.com/alloy-rs/alloy.git", rev = "d68a6b7", optional = true }
-alloy-node-bindings = { git = "https://github.com/alloy-rs/alloy.git", rev = "d68a6b7", optional = true }
-alloy-contract = { git = "https://github.com/alloy-rs/alloy.git", rev = "d68a6b7", optional = true }
-alloy-json-abi = { version = "0.7.0", optional = true }
-alloy-sol-types = { version = "0.7.0", optional = true }
 alloy-primitives = { version = "0.7.0", optional = true }
+erc6492 = { git = "https://github.com/WalletConnect/erc6492.git", optional = true }
 strum = { version = "0.26", features = ["strum_macros", "derive"] }
 
 [dev-dependencies]
+k256 = "0.13"
 tokio = { version = "1.35.1", features = ["test-util", "macros"] }
 
-[build-dependencies]
-serde_json = "1.0"
-hex = "0.4.3"
-
 [lints.clippy]
 indexing_slicing = "deny"