Add .prettierrc config

Author: pH-7

.prettierrc

@@ -0,0 +1,9 @@
+{
+  "singleQuote": true,
+  "trailingComma": "es5",
+  "tabWidth": 2,
+  "semi": true,
+  "printWidth": 100,
+  "arrowParens": "always",
+  "bracketSpacing": true
+}