Add Query-specific Hook function and RPC

[tequdev]

A new rcp call the query-only function inside of a hook.

I think it would be a third main function (in addition to hook(), cbak()) that would not be able to change the Ledger State by state_set, emit, etc. or read transaction information such as oxtn_field.
This is similar to account_info, etc., only information is obtained without signing the transaction or incurring transaction costs.

This feature allows users to retrieve readable data without having to decode the HookState themselves or pay transaction costs to retrieve the information.

[dangell7]

I believe the problem is that the call would require opening up the VM and this should come with a cost to avoid DDOS.

[tequdev]

It would be similar to the existing PathFind method.

Public nodes can make this RPC unavailable, and clusters may have dedicated nodes for this RPC.