Refactor and remove prost + tonic

Cargo.toml

@@ -110,14 +110,6 @@ curve25519-dalek = { version = "4.1.3" }
 ed25519-dalek = { version = "2", features = ["std"] }
 borsh = { version = "1.6.0", features = ["derive"] }
 bcs = { version = "0.2.1" }
-sui-rpc = { version = "0.3.1" }
-prost = { version = "0.14.3" }
-prost-types = { version = "0.14.3" }
-tonic = { version = "0.14.5", default-features = false, features = [
-    "channel",
-    "tls-ring",
-    "tls-webpki-roots",
-] }
 pem-rfc7468 = { version = "1.0.0", features = ["std"] }
 sui-types = { package = "sui-sdk-types", version = "0.3.0", features = [
     "serde",

crates/gem_cosmos/Cargo.toml

@@ -36,7 +36,7 @@ rpc = [
     "dep:futures",
     "dep:number_formatter",
 ]
-signer = ["dep:signer", "dep:k256"]
+signer = ["dep:signer", "dep:k256", "gem_encoding/protobuf"]
 reqwest = ["gem_client/reqwest"]
 unit_tests = ["signer"]
 chain_integration_tests = ["rpc", "reqwest", "settings/testkit"]

crates/gem_encoding/Cargo.toml

@@ -8,6 +8,7 @@ default = ["base64"]
 base32 = ["dep:data-encoding"]
 base58 = ["dep:bs58"]
 base64 = ["dep:base64"]
+protobuf = []
 
 [dependencies]
 base64 = { workspace = true, optional = true }

crates/gem_encoding/src/lib.rs

@@ -1,4 +1,5 @@
 mod error;
+#[cfg(feature = "protobuf")]
 pub mod protobuf;
 
 #[cfg(feature = "base32")]