Remove broken external oracle and fixed EIP-1559 gasPrice calculation

* Updated 1inch Oracle link and use multicall3 ( because this is the only contract supported on sepolia )
* Simplify EIP-1559 gasPrice calculation ( EIP-1559 removes necessity of using external oracles, just enough premium of basefee will ensure transaction being mined )
* Apply respective premium for fees ( Only applied on V6 Oracle class )
* Removed @tornado/gas-price-oracle oracle

src/feeOracleV6.ts

@@ -40,12 +40,12 @@ export class TornadoFeeOracleV6 extends TornadoFeeOracle implements ITornadoFeeO
   }
 
   /**
-   * Apply static 50% gasPrice premium for EIP-1559 enabled networks
+   * Apply static 30% gasPrice premium for EIP-1559 enabled networks
    *
    * Because Tornado Transactions are censored from block builders
    * it would take some time to be confirmed after when the transaction is broadcasted.
    *
-   * We apply 50% premium to combat basefee spike (ethers.js uses 100% premium by default)
+   * We apply 30% premium and 56% overall premium to combat basefee spike
    * (Can spike 12.5% per block accoring to the EIP-1559 metrics https://metamask.io/1559/)
    */
   async getGasPriceParams(speed?: LegacyGasPriceKey, bumpPercent?: number): Promise<GasPriceParams> {
@@ -53,7 +53,7 @@ export class TornadoFeeOracleV6 extends TornadoFeeOracle implements ITornadoFeeO
       return this.overrideGasPrice;
     }
     if (typeof bumpPercent === 'undefined') {
-      bumpPercent = this.chainId === ChainId.BSC ? undefined : 50;
+      bumpPercent = this.chainId === ChainId.BSC ? undefined : 30;
     }
     return super.getGasPriceParams(speed, bumpPercent);
   }