风格: 统一代码风格配置

.editorconfig

@@ -0,0 +1,19 @@
+root = true
+
+[*]
+indent_style = space
+indent_size = 4
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = false
+
+[*.{vue,js,scss}]
+indent_size = 2
+insert_final_newline = true
+
+[*.md]
+trim_trailing_whitespace = false
+
+[*.{yml,yaml,xml,xml.dist}]
+indent_size = 2