chore: sync EmmyLuaCodeStyle settings between .editorconfig and .luarc.json

.editorconfig

@@ -7,6 +7,7 @@ end_of_line = lf
 [nvim-tree-lua.txt]
 max_line_length = 78
 
+# keep these in sync with .luarc.json so that lua-language-server may check/apply standalone
 [*.lua]
 indent_style = space
 max_line_length = 140

.luarc.json

@@ -7,6 +7,18 @@
       "${3rd}/luv/library"
     ]
   },
+  "format": {
+    "defaultConfig": {
+      "indent_style": "space",
+      "max_line_length": "140",
+      "indent_size": "2",
+      "continuation_indent": "2",
+      "quote_style": "double",
+      "call_arg_parentheses": "always",
+      "space_before_closure_open_parenthesis": "false",
+      "align_continuous_similar_call_args": "true"
+    }
+  },
   "diagnostics": {
     "libraryFiles": "Disable",
     "globals": [],