Add eslint configuration to ALE linters

[jpesce]

Eslint allows linting via the eslint-plugin-jsonc plugin.

I've tested it with ALE and it works fine, we just need to add the following linter configuration:
https://github.com/jpesce/vim-jsonc/blob/master/ale_linters/jsonc/eslint.vim

call ale#linter#Define('jsonc', {
\   'name': 'eslint',
\   'output_stream': 'both',
\   'executable': function('ale#handlers#eslint#GetExecutable'),
\   'cwd': function('ale#handlers#eslint#GetCwd'),
\   'command': function('ale#handlers#eslint#GetCommand'),
\   'callback': 'ale#handlers#eslint#HandleJSON',
\})

To make it easier, if you want I can make the pull request.

[kevinoid]

Neat! Good find @jpesce!

Have you considered submitting a PR to https://github.com/dense-analysis/ale so all ALE users could benefit, whether or not they use this particular jsonc plugin? If there's reason not to, I'm not opposed to adding it here. Just trying to find the best spot.

[jpesce]

@kevinoid great! 🐸 I just made the pull request:
dense-analysis/ale#3873

Let's see what they think

[kevinoid]

Great work! Thanks again @jpesce!

I'll follow that PR and issue. Let me know if there's anything I can do to help.

[kevinoid]

Congratulations on getting dense-analysis/ale#3873 merged, and thanks for all of your effort on it @jpesce!

Presumably there's no longer a benefit to adding the configuration to this plugin, so I'll close this issue. Feel free to reopen if there's anything I've missed.