support downloading plugins

[eightfilms]

fuelup should also be able to download and install plugins supported natively by Fuel Labs.

[mitchmindtree]

I believe rustup distinguishes between sets of included plugins with the concept of "profiles":

https://rust-lang.github.io/rustup/concepts/profiles.html

Could be worth taking a similar approach.

[adlerjohn]

Note that currently all forc-* plugins that are in the Sway repo are bundled together into a single tarball, along with forc itself. External plugins such as forc-wallet are separate.

[Voxelot]

Do we have plans to setup a plugin registry?

[mitchmindtree]

No plans at the moment, for now I guess our ad-hoc plugin registry is:

cargo search --limit 100 "forc-" | grep -ie plugin

🥲

Currently a forc plugin is just an executable available on PATH that starts with forc- much like cargo "plugins", e.g. it doesn't even necessarily have to be a Rust program or expose a particular set of commands.

I wonder if there's a plugin registry/index out there for cargo-* programs that are known plugins aimed at "extending" cargo 🤔

[eightfilms]

Closed in favour of #162 since official plugins are currently downloaded in one release within the sway repository.