feat(lsp): add eslint LSP

lua/lsp.lua

@@ -15,7 +15,16 @@ local on_attach = function(_, bufnr)
   end
 
   nmap('<leader>rn', vim.lsp.buf.rename, '[R]e[n]ame')
-  nmap('<leader>ca', vim.lsp.buf.code_action, '[C]ode [A]ction')
+  nmap('<leader>c', vim.lsp.buf.code_action, '[C]ode action') -- NOTE: to see if ca is needed
+  nmap('<leader>f', function() -- https://stackoverflow.com/a/74303272
+    vim.lsp.buf.code_action({
+      filter = function(a)
+        return a.isPreferred
+      end,
+      apply = true
+    })
+  end, 'code action: [F]ix'
+  )
 
   nmap('gd', require('telescope.builtin').lsp_definitions, '[G]oto [D]efinition')
   nmap('gr', require('telescope.builtin').lsp_references, '[G]oto [R]eferences')
@@ -44,8 +53,8 @@ end
 
 -- document existing key chains
 require('which-key').add {
-  { "<leader>c",  group = "[C]ode" },
+  -- { "<leader>c",  group = "[C]ode" },
-  { "<leader>c_", hidden = true },
+  -- { "<leader>c_", hidden = true },
   { "<leader>d",  group = "[D]ocument" },
   { "<leader>d_", hidden = true },
   { "<leader>g",  group = "[G]it" },
@@ -87,6 +96,7 @@ local servers = {
   pyright = {},
   -- rust_analyzer = {},
   ts_ls = {},
+  eslint = {},
   -- html = { filetypes = { 'html', 'twig', 'hbs'} },
   texlab = {},
   ltex = {