[Feature Request] Command to switch provider

[rockyzhang24]

Description

Sometimes, when viewing LSP symbols, we might also want to reference the symbols provided by Treesitter. It would be great to have a command that switches the current provider from LSP to Treesitter effortlessly.

Provide a command to switch between available providers in the current buffer. For example, :OutlineSwitchProvider treesitter will switch to the treesitter provider. If no argument is provided, the command will cycle to the next available provider in the current buffer.

Thank you.

[hedyhli]

Sure, that makes a lot of sense. I'll leave this up for grabs.