add stylelint shareable config for css modules

.stylelintrc.json

@@ -1,9 +1,11 @@
 {
-  "extends": ["stylelint-config-standard", "stylelint-config-prettier"],
+  "extends": [
+    "stylelint-config-standard",
+    "stylelint-config-css-modules",
+    "stylelint-config-prettier"
+  ],
   "rules": {
     "declaration-empty-line-before": null,
-    "no-descending-specificity": null,
-    "selector-pseudo-class-no-unknown": null,
-    "selector-pseudo-element-colon-notation": null
+    "no-descending-specificity": null
   }
 }

package.json

@@ -90,6 +90,7 @@
     "prettier": "1.16.3",
     "slash2": "^2.0.0",
     "stylelint": "^9.10.1",
+    "stylelint-config-css-modules": "^1.3.0",
     "stylelint-config-prettier": "^4.0.0",
     "stylelint-config-standard": "^18.2.0",
     "tslint": "^5.12.1",