Fix: Rust-GBT packaging needs fixing

backend/src/__tests__/gbt/gbt-tests.ts

@@ -1,5 +1,5 @@
 import fs from 'fs';
-import { GbtGenerator, ThreadTransaction } from '../../../rust-gbt';
+import { GbtGenerator, ThreadTransaction } from 'rust-gbt';
 import path from 'path';
 
 const baseline = require('./test-data/target-template.json');

backend/src/api/mempool-blocks.ts

@@ -1,4 +1,4 @@
-import { GbtGenerator, GbtResult, ThreadTransaction as RustThreadTransaction, ThreadAcceleration as RustThreadAcceleration } from '../../rust-gbt';
+import { GbtGenerator, GbtResult, ThreadTransaction as RustThreadTransaction, ThreadAcceleration as RustThreadAcceleration } from 'rust-gbt';
 import logger from '../logger';
 import { MempoolBlock, MempoolTransactionExtended, TransactionStripped, MempoolBlockWithTransactions, MempoolBlockDelta, Ancestor, CompactThreadTransaction, EffectiveFeeStats, PoolTag } from '../mempool.interfaces';
 import { Common, OnlineFeeStatsCalculator } from './common';