[Feature Request] Allow serializing / deserializing complex structs

[kaw2k]

🚀 Feature Request Description

We need to serialize complex structs for use in permissioned signer.

Additional context

Base branch for the permissioned signer work is permissioned-signer. This is working off of Philip's account-abstraction-prod branch. The branch has one test enabled that repro's the issue.

For context, we are trying to interface with the following move function via script composer: add_permissioned_handle. This function accepts DelegationKey and a RateLimiter.

Here is how we parse the DelegationKey and RateLimiter in the ts-sdk:

• RateLimiter ts-sdk implementation
• DelegationKey ts-sdk implementation

When calling add_permissioned_handle, the following error is thrown when the DelegationKey serialized:

Unsupported struct input type for argument 1, type '0x1::permissioned_delegation::DelegationKey'