Cargo psibase assumes local chain port

[James-Mart]

cargo psibase deploy currently assumes the local chain is running at http://psibase.127.0.0.1.sslip.io:8080/. There is a -a flag for cargo psibase, but cargo psibase -a http://psibase.127.0.0.1.sslip.io:8089/ deploy ... still fails with: error sending request for url (http://psibase.127.0.0.1.sslip.io:8080/common/tapos/head).

Instead, I think the chain location should be configured in the project's Cargo.toml file. Perhaps you can configure named deploy targets, like:

[psibase.hosts]
dev = "http://psibase.127.0.0.1.sslip.io:8079"
prod = "https://psibase.io:8080"

And then you can use cargo psibase --host prod deploy

@swatanabe thoughts?