Expose enableFeeOnTransferFeeFetching post request field

[jsy1218]

Interface already fetches fee-on-transfer tax and shave off the quote amount. We need to protect smart-order-router fee-on-transfer tax feature under a feature flag, so that interface doesn't double FOT tax.

Routing-api corresponding PR Uniswap/routing-api#361

Tested via:

curl 'https://ggy7t0yp57.execute-api.us-east-2.amazonaws.com/prod/quote' \
  --data-raw '{
   "tokenInChainId":1,
   "tokenIn":"0x0D0A1767da735F725f41c4315E072c63Dbc6ab3D",
   "tokenOutChainId":1,
   "tokenOut":"0xab98093c7232e98a47d7270ce0c1c2106f61c73b",
   "amount":"1000000000000000000",
   "type":"EXACT_INPUT",
   "configs":[
      {
         "protocols":[
            "V2",
            "V3",
            "MIXED"
         ],
         "routingType":"CLASSIC",
         "unicornSecret":"MASKED",
         "debugRoutingConfig": "{\"debugRouting\":true}",
         "enableFeeOnTransferFeeFetching": true
       }
   ]
}'

Can see enableFeeOnTransferFeeFetching passing through routing-api until smart-order-router in personal AWS logging insights: