chore：add prettier

hackycy · hackycy · commit bf91edf79de8 · 2021-03-26T11:53:59.000+08:00
diff --git a/.prettierrc b/.prettierrc
@@ -0,0 +1,7 @@
+{
+  "tabWidth": 2,
+  "singleQuote": true,
+  "semi": false,
+  "trailingComma": "none",
+  "javascript.format.insertSpaceBeforeFunctionParenthesis": false
+}
