Add drop command for buffers

[n0bra1n3r]

Description

Adds vim's drop command for opening buffers:

:dr[op] [++opt] [+cmd] {file} ..
Edit the first {file} in a window.
- If the file is already open in a window change to that
window.
- If the file is not open in a window edit the file in the
current window. If the current buffer can't be abandoned,
the window is split first.
- Windows that are not in the argument list or are not full
width will be closed if possible.
The argument-list is set, like with the :next command.
The purpose of this command is that it can be used from a
program that wants Vim to edit another file, e.g., a debugger.
When using the :tab modifier each argument is opened in a
tab page. The last window is used if it's empty.
Also see ++opt and +cmd.

Type of change

• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

• Added a call to require"telescope.actions.set".edit(bufnr, "drop") for my buffers mapping.
• Executed mapping on a selected buffer in the Telescope buffers list.

Configuration:

• Neovim version (nvim --version): v0.7.2
• Operating system and version: Windows 11

Checklist:

• My code follows the style guidelines of this project (stylua)
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation (lua annotations)

[kkharji]

Oh wow I never knew this a thing a nvim. Pretty useful. Thanks

[Conni2461]

Thanks :)

(new feature, will not be backported to 0.1.x)