Add Create .linr command

[eitsupi]

What problem did you solve?

Close #712

Add a simple command that simply calls the lintr::use_lintr function that will be added in lintr 3.0.0.

(If you have)Screenshot

(If you do not have screenshot) How can I check this pull request?

Select "Create .linr to the workspace" from the command palette, with the development version of lintr package installed.

[ElianHugh]

I think now that we are moving toward more file creation functions, after this is merged we should look at relocating the files to a dedicated folder

[renkun-ken]

Currently, a .lintr is created silently and nothing happens when it is created.

Does it make sense to open the lintr file once it is created?

For example, we could capture the path of the created .lintr

normalizePath(lintr::use_lintr())

and open it in vscode when the background process is finished.

[eitsupi]

Does it make sense to open the lintr file once it is created?

I think it maybe a bit noisy.
The remote-containers.createDevContainerFile command that adds the devcontainer definition files to the project is the vscode command that I often use to add files, but this also does not open the file after it is added.

[renkun-ken]

LGTM Thanks!

[renkun-ken]

Does it make sense to open the lintr file once it is created?

I think it maybe a bit noisy. The remote-containers.createDevContainerFile command that adds the devcontainer definition files to the project is the vscode command that I often use to add files, but this also does not open the file after it is added.

OK sounds reasonable. Let's keep it silent for now.