Allow dynamic port allocation for tendermint when running local deployment

[OjusWiZard]

Is your feature request related to a problem? Please describe.
Right now, when we build for local deployment with deploy build --localhost, tendermint is configured hardcoded to use its default ports like this:

"P2P_LADDR": "tcp://localhost:26656",
"RPC_LADDR": "tcp://localhost:26657",
"PROXY_APP": "tcp://localhost:26658",

Describe the solution you'd like
It should be configurable

Describe alternatives you've considered
Maybe through CLI args or environment variables?