[Feature]: add two CLI query commands: block-results and simulate

[larry0x]

Summary

Add the following two new CLI commands:

simd q block-results [height]
simd q simulate /path/to/tx.json

Problem Definition

Why these are useful?

The simd q block command queries the block, but it doesn't include tx events or begin/endblocker events. As a developer, it's often useful to have a easy way to query begin/endblocker events.

The simulate command is mainly useful for multisigs. Very often, we compose a tx, gather multisig signers to sign it, only to find out the tx fails because we made a typo when composing it. It'd be greatly helpful if we can simulate the tx, find out whether it will be successful or not, as well as get a gas estimate, before having signers sign it.

Proposal

Add the two suggested commands.