Add policyable protcol to separate file

Author: janndriessen

Sources/Core/Transaction/CodableTransaction.swift

@@ -292,10 +292,6 @@ extension CodableTransaction: Codable {
 
 }
 
-public protocol Policyable {
-    func resolve(provider: Web3Provider, transaction: CodableTransaction?) async throws -> BigUInt
-}
-
 extension CodableTransaction {
     public enum GasLimitPolicy {
         case automatic

Sources/Core/Transaction/Policyable.swift

@@ -0,0 +1,13 @@
+//
+//  File.swift
+//  
+//
+//  Created by Jann Driessen on 01.11.22.
+//
+
+import Foundation
+import BigInt
+
+public protocol Policyable {
+    func resolve(provider: Web3Provider, transaction: CodableTransaction?) async throws -> BigUInt
+}