Tool to monitor network upgrade status and auto submit MsgTryUpgrade

[rootulp]

Context

#2832
#2880 (comment)

Problem

There now exists a new msg type that initiates an upgrade (MsgTryUpgrade).

Proposal

Create a stand-alone binary (likely that lives in /tools) that monitors that status of upgrades on the network. When the tool recognizes that the upgrade threshold has been met, it should auto-submit a transaction that includes the message to initiate an upgrade. The tool likely needs to be configured with a GRPC endpoint to a full-consensus node. It likely also needs a keyring that is funded with a small amount of tia to submit the transaction.