Create an API that enables you to simulate execution of an action and see what state keys it touches.

[richardpringle]

The Recorder struct from the vmwithcontracts example should be moved into the core of the hyper-sdk because it's likely useful for all vms.

Originally posted by @aaronbuchwald in #1493 (comment)

[aaronbuchwald]

This should be similar to #1550 w/ the exception that it will need to execute against a full trie view (support a sequence of dependent R/W operations) rather than using ReadState to get an atomic read of the keys specified by StateKeys

[aaronbuchwald]

This should move

hypersdk/examples/vmwithcontracts/vm/server.go

Line 99 in 77a73ba

func (j *JSONRPCServer) simulate(ctx context.Context, t actions.Call, actor codec.Address) (state.Keys, uint64, error) {

to be a general purpose call next to

hypersdk/api/jsonrpc/server.go

Line 174 in 77a73ba

func (j *JSONRPCServer) Execute(

.

Separately, we should update merkledb to smoothly transition the returned immutable state (using last accepted) to using the historical revisions to provide a consistent view that does not get invalidated when a block is accepted.