Add PythErrors abi (#827)

* add error abis

* add to script too

Author: jayantk

target_chains/ethereum/sdk/solidity/abis/PythErrors.json

@@ -0,0 +1,67 @@
+[
+  {
+    "inputs": [],
+    "name": "InsufficientFee",
+    "type": "error"
+  },
+  {
+    "inputs": [],
+    "name": "InvalidArgument",
+    "type": "error"
+  },
+  {
+    "inputs": [],
+    "name": "InvalidGovernanceDataSource",
+    "type": "error"
+  },
+  {
+    "inputs": [],
+    "name": "InvalidGovernanceMessage",
+    "type": "error"
+  },
+  {
+    "inputs": [],
+    "name": "InvalidGovernanceTarget",
+    "type": "error"
+  },
+  {
+    "inputs": [],
+    "name": "InvalidUpdateData",
+    "type": "error"
+  },
+  {
+    "inputs": [],
+    "name": "InvalidUpdateDataSource",
+    "type": "error"
+  },
+  {
+    "inputs": [],
+    "name": "InvalidWormholeVaa",
+    "type": "error"
+  },
+  {
+    "inputs": [],
+    "name": "NoFreshUpdate",
+    "type": "error"
+  },
+  {
+    "inputs": [],
+    "name": "OldGovernanceMessage",
+    "type": "error"
+  },
+  {
+    "inputs": [],
+    "name": "PriceFeedNotFound",
+    "type": "error"
+  },
+  {
+    "inputs": [],
+    "name": "PriceFeedNotFoundWithinRange",
+    "type": "error"
+  },
+  {
+    "inputs": [],
+    "name": "StalePrice",
+    "type": "error"
+  }
+]

target_chains/ethereum/sdk/solidity/scripts/generateAbi.js

@@ -2,7 +2,13 @@ const fs = require("fs");
 const solc = require("solc");
 
 // Assuming each contract is in the file with the same name.
-var contracts = ["IPyth", "IPythEvents", "AbstractPyth", "MockPyth"];
+var contracts = [
+  "IPyth",
+  "IPythEvents",
+  "AbstractPyth",
+  "MockPyth",
+  "PythErrors",
+];
 
 var sources = {};
 var outputSelection = {};