Add coordinator wrapper (#1792)

* wip first pass at coordinator wrapper

* implement cancels, helper methods, and more unit tests

* pin typeorm version in pipeline

* prettier

* add export to 0x.js

* generate ZeroEx transaction using EIP712

* update Coordinator artifact

* change OrderError -> TypedDataError

packages/contract-wrappers/src/index.ts

@@ -26,6 +26,7 @@ export {
 } from '@0x/abi-gen-wrappers';
 
 export { ContractWrappers } from './contract_wrappers';
+export { CoordinatorWrapper } from './contract_wrappers/coordinator_wrapper';
 export { ERC20TokenWrapper } from './contract_wrappers/erc20_token_wrapper';
 export { ERC721TokenWrapper } from './contract_wrappers/erc721_token_wrapper';
 export { EtherTokenWrapper } from './contract_wrappers/ether_token_wrapper';
@@ -58,6 +59,8 @@ export {
     TraderInfo,
     ValidateOrderFillableOpts,
     DutchAuctionData,
+    CoordinatorServerCancellationResponse,
+    CoordinatorServerError,
 } from './types';
 
 export {
@@ -72,6 +75,8 @@ export {
     Order,
     SignedOrder,
     AssetProxyId,
+    SignedZeroExTransaction,
+    ZeroExTransaction,
 } from '@0x/types';
 
 export {