chore: 使用editor config配置默认保存行为

.editorconfig

@@ -0,0 +1,16 @@
+# http://editorconfig.org
+# 配合editorconfig扩展使用
+root = true
+
+[*]
+indent_style = space
+indent_size = 4
+end_of_line = lf
+
+[*.{js}]
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.{yml,yaml,md}]
+indent_size = 2