Extracting prettier config (#10847)

Co-authored-by: Nick Taylor <nick@iamdeveloper.com>

.prettierrc.json

@@ -0,0 +1,5 @@
+{
+  "singleQuote": true,
+  "trailingComma": "all",
+  "printWidth": 80
+}

app/javascript/.storybook/main.js

@@ -2,6 +2,8 @@ const path = require('path');
 const marked = require('marked');
 const renderer = new marked.Renderer();
 
+const prettierConfig = require('../../../.prettierrc.json');
+
 module.exports = {
   stories: ['../**/__stories__/*.stories.jsx'],
   addons: [
@@ -13,11 +15,7 @@ module.exports = {
     {
       name: '@storybook/addon-storysource',
       loaderOptions: {
-        prettierConfig: {
-          singleQuote: true,
-          trailingComma: 'all',
-          printWidth: 80,
-        },
+        prettierConfig,
       },
     },
   ],

package.json

@@ -73,11 +73,6 @@
       "svgo --disable=removeViewBox --pretty"
     ]
   },
-  "prettier": {
-    "singleQuote": true,
-    "trailingComma": "all",
-    "printWidth": 80
-  },
   "repository": {
     "type": "git",
     "url": "git+https://github.com/thepracticaldev/dev.to.git"