<!--- Provide a general summary of the issue in the Title above --> Implement credit deposit signature API that allows the deposits to be made on credit hub. ## Implementation details <!-- Enter description of implementation that may help dev team --> Endpoint: - `/v1/chains/<id>/credit/deposits` Signature should be made to match [this](https://github.com/sprintertech/remote-collateral-contracts/blob/07701839289886a0c03299fa5a431bfe3b6aa171/contracts/CreditHubController.sol#L63) ## Testing details <!-- Enter description of special test-cases--> - unit tests ## Acceptance Criteria <!-- Enter the conditions of satisfaction here. That is, the conditions that will satisfy the user/persona that the goal/benefit/value has been achieved -->
