Use latest vscode-eslint from VS Marketplace

[gtbuchanan]

The upstream vscode-eslint repo doesn't appear to provide the VSIX on the GitHub releases anymore.

The updated server runs fine, but it's still not showing diagnostics for me with ESLint flat file config. I'm thinking I need to do something like this in .vimrc, but it might override the built-in settings from vim-lsp-settings:

let g:lsp_settings = {
\   'eslint-language-server': {
\     'workspace_config': {
\       'useFlatConfig': v:true,
\     }
\   }
\ }

I'm open to assistance. I'm definitely not an expert with language servers

Resolves: #783

[mattn]

Thank you. Could you please add your code into this?

vim-lsp-settings/settings/eslint-language-server.vim

Lines 11 to 17 in 139d4ad

	\ 'workspace_config': lsp_settings#get('eslint-language-server', 'workspace_config', {
	\ 'validate': 'probe',
	\ 'packageManager': 'npm',
	\ 'codeActionOnSave': {
	\ 'enable': v:true,
	\ 'mode': 'all',
	\ },