[Test] Add stylelint configuration

Author: moisseev

.stylelintrc.json

@@ -0,0 +1,11 @@
+{
+    "extends": "stylelint-config-standard",
+    "rules": {
+    	"at-rule-empty-line-before": null,
+    	"color-hex-length": null,
+    	"comment-empty-line-before": null,
+        "indentation": 4,
+        "number-leading-zero": null,
+        "rule-empty-line-before": null
+    }
+}

package.json

@@ -1,5 +1,6 @@
 {
     "devDependencies": {
-		"eslint": "*"
+		"eslint": "*",
+        "stylelint-config-standard": "*"
     }
 }