Relay staking v2

[encryptedcoins]

We are transitioning to a new staking system. Users will be able to send their ENCS into a staking contract. After some time, they can withdraw the tokens together with the rewards. Each staking contract UTXO corresponds to a relayer.

• Upgrade staking functionality using these staking contracts (frontend-DAO):

  https://github.com/SundaeSwap-finance/coinecta-staking-contracts/tree/pi/spec-annotations?tab=readme-ov-file

• Use relays to fetch the delegation table instead of the delegation server.