feat(sdk-coin-flrp): export TransactionBuilder from transactionBuilder module

Ticket: WIN-7209

Author: mohd-kashif

modules/sdk-coin-flrp/src/lib/index.ts

@@ -3,6 +3,7 @@ export * from './iface';
 export { KeyPair } from './keyPair';
 export { Utils };
 export { TransactionBuilderFactory } from './transactionBuilderFactory';
+export { TransactionBuilder } from './transactionBuilder';
 export { Transaction } from './transaction';
 export { AtomicTransactionBuilder } from './atomicTransactionBuilder';
 export { AtomicInCTransactionBuilder } from './atomicInCTransactionBuilder';