Add bash completions for forc

[adlerjohn]

• Add forc --list #702
• Add forc locate-project that prints out manifest file location, similar to cargo locate-project
• Port https://github.com/rust-lang/cargo/blob/47b869c107fbe0aa42444f46d59f4ba03ffa15fe/src/etc/cargo.bashcomp.sh over

[sezna]

With regards to --list -- we have forc --help. However, cargo --list lists plugins and extensible commands that have been installed. We don't really have that functionality in forc. Do we want that?

[adlerjohn]

Eventually we probably want plugins, but for now simply listing commands just like cargo --list is probably good enough IMO.

[Voxelot]

Since the default shell for MacOS is zsh, we should also consider a zsh plugin similar to the rust completion one: https://github.com/ohmyzsh/ohmyzsh/tree/master/plugins/rust

[ControlCplusControlV]

Going to start working on implementing a forc -list

[JoshuaBatty]

Hey @ControlCplusControlV , i'm working on the shell autocompletions FYI. But perhaps you could have a go at forc locate-project along with forc --list

[mitchmindtree]

Closed by #864

[PaulRBerg]

Since the default shell for MacOS is zsh, we should also consider a zsh plugin similar to the rust completion one

Yes, please! An Oh My Zsh plugin for Forc would be great.