Add code action to disable linters

[renkun-ken]

This PR enables CodeAction and provides the following code actions:

• Disable all linters for this line (appends # nolint in the end of the line if a linter complains).
• Disable some_linter for this line
• Test cases

There is an open discussion at r-lib/lintr#720 about disabling specific linters. In the future, we could add code action to disable specific linters that produce diagnostics for certain lines. The development version of lintr already supports disabling specific linters:

# nolint: linter_name, linter2_name

# nolint start: linter_name, linter2_name
# nolint end

[renkun-ken]

I'd like to merge this PR to enable code actions to support only "Disable all linters for this line" before how lintr settles down how individual linters could be disabled.

[randy3k]

It makes sense to me to merge the PR. It will be great if you could come up with some tests though.

[renkun-ken]

Yes, I'm working on some test cases for this.

[renkun-ken]

Not sure why windows check not passing.

[renkun-ken]

Looks like the windows build does not use the latest pushed version since the log does not contain the diagnostics in diagnostics_callback with 7a27cc0.

[randy3k]

Looks like remotes::install_local() was skipped because of the cache. Using force should fix it.

Run Rscript -e "remotes::install_local()"
12
Skipping install of 'languageserver' from a local remote, the SHA1 (0.3.10) has not changed since last install.
13
  Use `force = TRUE` to force installation

[randy3k]

LGTM