OnChargeTx implementation

Cargo.toml

@@ -8,7 +8,8 @@ members = [
     "parachain/inherent",
     "parachain/runtime-api",
     "parachain",
-    "ismp-demo"
+    "ismp-demo",
+    "transaction-payment"
 ]
 
 [workspace.dependencies]

transaction-payment/Cargo.toml

@@ -0,0 +1,36 @@
+[package]
+name = "transaction-payment"
+version = "0.1.0"
+edition = "2021"
+authors = ["Polytope Labs <[email protected]>"]
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+frame-support = { git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.42", default-features = false }
+frame-system = { git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.42", default-features = false }
+sp-runtime = { git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.42", default-features = false }
+sp-std = { git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.42", default-features = false }
+sp-core = { git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.42", default-features = false }
+pallet-transaction-payment = { git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.42", default-features = false }
+pallet-asset-tx-payment = { git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.42", default-features = false }
+scale-info = { version = "2.1.1", default-features = false, features = ["derive"] }
+scale-codec = { package = "parity-scale-codec", version = "3.1.3", default-features = false, features = [
+	"derive",
+] }
+pallet-ismp = { git = "https://github.com/polytope-labs/substrate-ismp", branch = "main", default-features = false }
+
+[features]
+default = ["std"]
+std = [
+    "scale-codec/std",
+    "frame-support/std",
+    "frame-system/std",
+    "scale-info/std",
+    "sp-runtime/std",
+    "sp-std/std",
+    "sp-core/std",
+    "pallet-ismp/std",
+    "pallet-transaction-payment/std",
+    "pallet-asset-tx-payment/std",
+]