Make wrappers small again (#2243)

* introduce --debug option to abi-gen and remove debug functions from @0x/abi-gen-wrappers
* make evmExecAsync protected; ignore deployedBytecode in doc comment
* trim deployedBytecode so it's undefined unless a contract has pure functions
* remove validateAndSendTransactionAsync
* Create `AwaitTransactionSuccessOpts` and `SendTransactionOpts` types 
* Remove duplicate types `IndexedFilterValues`, `DecodedLogEvent`, `EventCallback` from `@0x/base-contract`

packages/contract-wrappers/src/index.ts

@@ -154,6 +154,8 @@ export {
     SignedZeroExTransaction,
     SimpleEvmOutput,
     SimpleEvmBytecodeOutput,
+    AwaitTransactionSuccessOpts,
+    SendTransactionOpts,
     EIP712DomainWithDefaultSchema,
     EventCallback,
     DecodedLogEvent,