add a rainlang repl to the order page

[thedavidmeister]

the debug stacks are nice, but being able to repl and do things like get to inspect storage values directly would be very helpful

[hardyjosh]

This would require reconstructing the orderbook and order context and passing that into an eval for the order's deployer/store.

@thedavidmeister do we need full debugs for this? Or just the main stack we get back from eval? As in, do we need to do this on a fork or can we just ping the rpc directly?

This wouldn't be dotrain, it would just be pure rainlang, so only a single source.

The repl would need block number controls same as with quote - it would refresh to get latest block, pause to freeze at the current block, or input any specific block number.

[thedavidmeister]

@hardyjosh only the main stack i think