Please add support for cargo add and cargo remove commands

[lucatrv]

Similarly to the cargo fetch and cargo update commands, which currently can be run from within VS Code, it would be very convenient to add support for cargo add and cargo remove commands, respectively to add and remove dependencies.

Note: cargo add was introduced with Rust 1.62, and cargo remove was introduced just today with Rust 1.66. These two commands were first implemented in cargo edit. In future other commands from cargo edit may be integrated into Cargo, such as cargo upgrade.

[serayuzgur]

Since there are many issues going related with this, we have our own index server now. No more local checks with v0.6.0 .
Do you still need this ?

[lucatrv]

I was not aware about issues, I confirm that in my opinion it would be a useful addition (which I thought was pretty trivial to add), but of course I can also live using the terminal.