added support for svelte (#1008)

lua/lang/svelte.lua

@@ -0,0 +1,35 @@
+local M = {}
+
+M.config = function()
+  O.lang.svelte = {}
+end
+
+M.format = function()
+  -- TODO: implement formatter (if applicable)
+  return "No formatter configured!"
+end
+
+M.lint = function()
+  -- TODO: implement linters (if applicable)
+  return "No linters configured!"
+end
+
+M.lsp = function()
+  if require("lv-utils").check_lsp_client_active "svelte" then
+    return
+  end
+
+  require("lspconfig").svelte.setup {
+    cmd = { DATA_PATH .. "/lspinstall/svelte/node_modules/.bin/svelteserver", "--stdio" },
+    filetypes = { "svelte" },
+    root_dir = require("lspconfig.util").root_pattern("package.json", ".git"),
+    on_attach = require("lsp").common_on_attach,
+  }
+end
+
+M.dap = function()
+  -- TODO: implement dap
+  return "No DAP configured!"
+end
+
+return M