Add sumneko_lua LSP

lua/config/lsp.lua

@@ -108,6 +108,42 @@ lspconfig.vimls.setup{
   }
 }
 
+local sumneko_binary_path = vim.fn.exepath('lua-language-server')
+if vim.g.is_mac > 0 or vim.g.is_linux > 0 and sumneko_binary_path ~= '' then
+  local sumneko_root_path = vim.fn.fnamemodify(sumneko_binary_path, ':h:h:h')
+
+  local runtime_path = vim.split(package.path, ';')
+  table.insert(runtime_path, "lua/?.lua")
+  table.insert(runtime_path, "lua/?/init.lua")
+
+  require'lspconfig'.sumneko_lua.setup {
+    on_attach = on_attach,
+    cmd = {sumneko_binary_path, "-E", sumneko_root_path .. "/main.lua"};
+    settings = {
+      Lua = {
+        runtime = {
+          -- Tell the language server which version of Lua you're using (most likely LuaJIT in the case of Neovim)
+          version = 'LuaJIT',
+          -- Setup your lua path
+          path = runtime_path,
+        },
+        diagnostics = {
+          -- Get the language server to recognize the `vim` global
+          globals = {'vim'},
+        },
+        workspace = {
+          -- Make the server aware of Neovim runtime files
+          library = vim.api.nvim_get_runtime_file("", true),
+        },
+        -- Do not send telemetry data containing a randomized but unique identifier
+        telemetry = {
+          enable = false,
+        },
+      },
+    },
+  }
+end
+
 -- Change diagnostic signs.
 vim.fn.sign_define('LspDiagnosticsSignError', { text = "✗", texthl = "LspDiagnosticsDefaultError" })
 vim.fn.sign_define('LspDiagnosticsSignWarning', { text = "!", texthl = "LspDiagnosticsDefaultWarning" })