feat: Btc vault pallet

Cargo.toml

@@ -49,6 +49,9 @@ members = [
     'pallets/broadcast',
     'liquidation-worker-support',
     'pallets/hsm',
+    'pallets/build-evm-tx',
+    "pallets/signet",
+    'pallets/erc20-vault',
 ]
 
 resolver = "2"
@@ -58,6 +61,7 @@ codec = { package = "parity-scale-codec", version = "3.6.12", default-features =
 scale-info = { version = "2.11.1", default-features = false, features = ["derive"] }
 serde = { version = "1.0.209", default-features = false }
 primitive-types = { version = "0.12.2", default-features = false }
+borsh = { version = "1.5.7", default-features = false, features = ["derive"] }
 
 affix = "0.1.2"
 alloy-primitives = { version = "0.7", default-features = false }
@@ -157,7 +161,12 @@ pallet-liquidation = { path = "pallets/liquidation", default-features = false }
 pallet-broadcast = { path = "pallets/broadcast", default-features = false }
 liquidation-worker-support = { path = "liquidation-worker-support", default-features = false }
 pallet-hsm = { path = "pallets/hsm", default-features = false }
+pallet-build-evm-tx = { path = "pallets/build-evm-tx", default-features = false }
+pallet-build-btc-tx = { path = "pallets/build-btc-tx", default-features = false }
 pallet-parameters = { path = "pallets/parameters", default-features = false }
+pallet-signet = { path = "pallets/signet", default-features = false }
+pallet-erc20-vault = { path = "pallets/erc20-vault", default-features = false } 
+pallet-btc-vault = { path = "pallets/btc-vault", default-features = false } 
 
 hydra-dx-build-script-utils = { path = "utils/build-script-utils", default-features = false }
 scraper = { path = "scraper", default-features = false }

pallets/btc-vault/Cargo.toml

@@ -0,0 +1,69 @@
+[package]
+name = "pallet-btc-vault"
+version = "1.0.0"
+authors = ["Substrate DevHub <https://github.com/substrate-developer-hub>"]
+edition = "2021"
+license = "Apache-2.0"
+publish = false
+
+[package.metadata.docs.rs]
+targets = ["x86_64-unknown-linux-gnu"]
+
+[dependencies]
+codec = { package = "parity-scale-codec", version = "3.6.12", default-features = false, features = ["derive"] }
+scale-info = { version = "2.11.1", default-features = false, features = ["derive"] }
+hex = { version = "0.4", default-features = false, features = ["alloc"] }
+serde = { version = "1.0", default-features = false, features = ["derive", "alloc"] }
+serde_json = { version = "1.0", default-features = false, features = ["alloc"] }
+
+frame-benchmarking = { git = "https://github.com/paritytech/polkadot-sdk.git", tag = "polkadot-stable2409-2", default-features = false, optional = true }
+frame-support = { git = "https://github.com/paritytech/polkadot-sdk.git", tag = "polkadot-stable2409-2", default-features = false }
+frame-system = { git = "https://github.com/paritytech/polkadot-sdk.git", tag = "polkadot-stable2409-2", default-features = false }
+sp-io = { git = "https://github.com/paritytech/polkadot-sdk.git", tag = "polkadot-stable2409-2", default-features = false }
+sp-core = { git = "https://github.com/paritytech/polkadot-sdk.git", tag = "polkadot-stable2409-2", default-features = false }
+sp-std = { git = "https://github.com/paritytech/polkadot-sdk.git", tag = "polkadot-stable2409-2", default-features = false }
+sp-runtime = { git = "https://github.com/paritytech/polkadot-sdk.git", tag = "polkadot-stable2409-2", default-features = false }
+
+alloy-sol-types = { version = "0.8.14", default-features = false }
+
+pallet-signet = { path = "../signet", default-features = false }
+pallet-build-btc-tx = { path = "../build-btc-tx", default-features = false }
+
+[dev-dependencies]
+pallet-balances = { git = "https://github.com/paritytech/polkadot-sdk.git", tag = "polkadot-stable2409-2" }
+secp256k1 = { version = "0.29.1", features = ["rand", "recovery"] }
+
+[features]
+default = ["std"]
+std = [
+    "codec/std",
+    "scale-info/std",
+    "hex/std",
+    "serde/std",
+    "serde_json/std",
+    "frame-benchmarking?/std",
+    "frame-support/std",
+    "frame-system/std",
+    "sp-io/std",
+    "sp-core/std",
+    "sp-std/std",
+    "sp-runtime/std",
+    "alloy-sol-types/std",
+    "pallet-signet/std",
+    "pallet-build-btc-tx/std"
+]
+runtime-benchmarks = [
+    "frame-benchmarking/runtime-benchmarks",
+    "frame-support/runtime-benchmarks",
+    "frame-system/runtime-benchmarks",
+]
+try-runtime = [
+    "frame-support/try-runtime",
+    "frame-system/try-runtime",
+]
+
+[target.'cfg(not(feature = "std"))'.dependencies]
+borsh = { version = "1.5", default-features = false, features = ["derive", "hashbrown"] }
+
+[target.'cfg(feature = "std")'.dependencies]
+borsh = { version = "1.5", default-features = false, features = ["derive", "std"] }