Add remote flag

[bgins]

Summary

Problem

Currently there is no way to specify the remote staging servers for testing purposes.

Impact

It makes testing new features on the server quite difficult as the source code would need to be changed temporarily and recompiled just to talk to the staging servers.

Solution

Add a flag with Clap that sets a variable.

Details

This feature is in the Haskell version of the CLI but needs to be included in the rewrite.

[BoisterousCoder]

Seems to already exist to the extent that it can currently be implemented to should we close this issue?

fission-cli/src/main.rs

Line 15 in 27ca6ef

remote: Option<String>,