update dot files

dot/.editorconfig

@@ -0,0 +1,14 @@
+root = true
+
+[*]
+charset = utf-8
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.{js,ts}]
+indent_style = space
+indent_size = 4
+
+[{package,package-lock}.json]
+indent_style = space
+indent_size = 2