Add ContractCodeCostInputs and new cost types

Stellar-contract-config-setting.x

@@ -139,7 +139,30 @@ enum ContractCostType {
     // Cost of int256 shift (`shl`, `shr`) operation
     Int256Shift = 21,
     // Cost of drawing random bytes using a ChaCha20 PRNG
-    ChaCha20DrawBytes = 22
+    ChaCha20DrawBytes = 22,
+
+    // Cost of instantiating unknown wasm bytecode.
+    VmInstantiateUnknownBytes = 23,
+    // Cost of instantiating wasm bytes that only encode instructions.
+    VmInstantiateInstructions = 24,
+    // Cost of instantiating a known number of wasm functions.
+    VmInstantiateFunctions = 25,
+    // Cost of instantiating a known number of wasm globals.
+    VmInstantiateGlobals = 26,
+    // Cost of instantiating a known number of wasm table entries.
+    VmInstantiateTableEntries = 27,
+    // Cost of instantiating a known number of wasm types.
+    VmInstantiateTypes = 28,
+    // Cost of instantiating a known number of wasm data segments.
+    VmInstantiateDataSegments = 29,
+    // Cost of instantiating a known number of wasm element segments.
+    VmInstantiateElemSegments = 30,
+    // Cost of instantiating a known number of wasm imports.
+    VmInstantiateImports = 31,
+    // Cost of instantiating a known number of wasm exports.
+    VmInstantiateExports = 32,
+    // Cost of instantiating a known number of memory pages.
+    VmInstantiateMemoryPages = 33
 };
 
 struct ContractCostParamEntry {

Stellar-ledger-entries.x

@@ -508,8 +508,30 @@ struct ContractDataEntry {
     SCVal val;
 };
 
+struct ContractCodeCostInputs {
+    uint32 nFunctions;
+    uint32 nGlobals;
+    uint32 nTableEntries;
+    uint32 nTypes;
+    uint32 nDataSegments;
+    uint32 nElemSegments;
+    uint32 nImports;
+    uint32 nExports;
+    uint32 nMemoryPages;
+};
+
 struct ContractCodeEntry {
-    ExtensionPoint ext;
+    union switch (int v)
+    {
+        case 0:
+            void;
+        case 1:
+            struct
+            {
+                ExtensionPoint ext;
+                ContractCodeCostInputs costInputs;
+            } v1;
+    } ext;
 
     Hash hash;
     opaque code<>;