Icu 6680 UI code editor for secrets (#1499)

* feat: 🎸 initial secret editor

* feat: 🎸 Create Secret Editor for JSON Credentials

✅ Closes: ICU-6680

* style: 💄 Fix sass lint errors

* style: 💄 Appease sass-lint rule for using --size in stylesheet

* refactor: 💡 Set Icon size via component attribute

* refactor: 💡 remove computed decorators for Secret Editor

* refactor: 💡 update editor styles to using sizing variables

* refactor: 💡 update styles and add comments

* refactor: 💡 clean up styling for secret editor

* refactor: 💡 update class names to be more verbose

* chore: 🤖 move jsonlint import to rose index.js

* refactor: 💡 remove duplicate margin style for skeleton body

* refactor: 💡 add comments to SecretEditor component class

* refactor: 💡 large updates to secret json editor

* refactor: 💡 Move JSON Secret to form/field/ directory

* style: 💄 fix padding for Secret Editor line numbers

* chore: 🤖 disable property-sort-oder in .sasslintrc

* refactor: 💡 reorder app.scss styles

* test: 💍 Add integration tests for JSON Secret and Skeleton

addons/rose/addon/modifiers/code-mirror.js

@@ -9,6 +9,8 @@ import 'codemirror/addon/edit/matchbrackets';
 import 'codemirror/addon/edit/closebrackets';
 import 'codemirror/addon/selection/active-line';
 import 'codemirror/addon/display/autorefresh';
+import 'codemirror/addon/lint/lint'
+import 'codemirror/addon/lint/json-lint'
 
 // Here we define default options for the editor.
 // These should follow the codemirror configuration types