fix(base-node): minor fixups for hex/type parsing and long running commands

[sdbondi]

Description

1. fix(base-node): make dial-peer and discover-peer run in their own task
2. fix(base-node): when parsing hex or type commands, do string parsing first

Motivation and Context

1. Some commands can run for a long time, while they are running they cannot be interrupted and no other commands can be issued. This change makes dial-peer and discover-peer run on their own task so that they do not block other commands.
2. get-block 1234 would be interpreted as hex instead of as a block height. This PR fixes that.

How Has This Been Tested?

Manually