Derives the fee tier PDA for the given fee tier index under the supplied whirlpool deployment.
Uses DEFAULT_WHIRLPOOL_DEPLOYMENT when whirlpoolDeployment is omitted.
whirlpoolDeployment
Derives the fee tier PDA for the given fee tier index under the supplied whirlpool deployment.
Uses DEFAULT_WHIRLPOOL_DEPLOYMENT when
whirlpoolDeploymentis omitted.