Ideas for utils

[0xJohnnyGault]

• [x] Show all variants of an addr (X-avax1blah, X-fuji1blah, X-local1blah, X-custom1blah)
• [ ] cmds for interacting with built-in precompiles (read / write)
• [ ] cmd (or docs?) on how to get a single node to have same genesis as ANR (custom instead of local)
• [ ] cmd for setting up airdrop at genesis