feat: Add prettier config

jbee37142 · jbee37142 · commit 76fdefa222b4 · 2020-01-07T10:27:09.000+09:00
diff --git a/template/.prettierrc b/template/.prettierrc
@@ -0,0 +1,5 @@
+{
+  "semi": false,
+  "trailingComma": "all",
+  "singleQuote": true
+}
