refactor(#2988): multi instance dir_up

[Uanela]

Refactored the dir-up action by moving it from a standalone module into the Explorer class as a method. This improves code organization by consolidating explorer-related functionality within the Explorer class itself.

Changes

• Deleted lua/nvim-tree/actions/root/dir-up.lua
• Modified lua/nvim-tree/actions/root/init.lua - Removed dir_up require statement
• Modified lua/nvim-tree/api.lua - Updated Api.tree.change_root_to_parent to call the new Explorer method via wrap_explorer("dir_up")
• Modified lua/nvim-tree/explorer/init.lua - Added Explorer:dir_up(node) method

[alex-courtis]

Thanks @Uanela I will get to a review on the weekend.

What sort of task would you like to work on next? Another refactor? Bug? Feature?

[Uanela]

I guess a another refactor would help me still getting along with the codebase.

[alex-courtis]

Base Cases OK

Open /home/alex/src/keyd

:NvimTreeOpen

<C-]> data
:pwd
/home/alex/src/keyd/data

-
:pwd
/home/alex/src/keyd

-
:pwd
/home/alex/src

respect_buf_cwd = true OK

Open /home/alex/src/keyd

:NvimTreeOpen

-

q

:NvimTreeOpen

Above Tests Repeated On Node And Root

OK

[alex-courtis]

Looking good @Uanela , all tests pass and it's working beautifully.

Only one small change please:

• move the requires to the top of the file

[alex-courtis]

Please move these requires up to the top of the file. Here's an example you can follow: https://github.com/nvim-tree/nvim-tree.lua/blob/master/lua/nvim-tree/actions/tree/open.lua#L3

Why do this at the start of the file?

• We only want to do it once, for speed
• Any problems with the require are found immediately at startup, instead of later at runtime

[alex-courtis]

I guess a another refactor would help me still getting along with the codebase.

I'll get back to you shortly. The issue backlog needs to be groomed and tidied.