CCTP Finalisation

[salmanferrum]

This PR removes the logic of using two FundManagers from the backend script. The following changes were made:

• Removed CCTPFundManager related code.
• Removed the logic for detecting when to use FundManager or CCTPFundManager.
• Removed the cctpType parameter from withdrawal functions as it's no longer needed.
• This simplifies the FiberRouter and removes unnecessary complexity related to the CCTPFundManager.

Additionally, the integration script is also updated to include the following flow:

• Determines CCTP type based on the logic for checking balance of FundManager on the target network.
• Performs either the normal flow or the CCTP flow accordingly.
• Call Swap functions
• Incase of CCTP Flow, Calls the circleAttestation function to perform withdrawal to the FundManager of the target network.
• Then, Calls withdrawSigned and withdrawSignedAndSwapRouter functions after the attestation is completed.

[lukmaan-k]

Looks good

[naiemk]

No access control?