Add TS explicit member visibility rule

Author: rozsival

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@wavevision/coding-standard",
-  "version": "1.0.7",
+  "version": "1.0.8",
   "description": "The Wavevision SCSS and TypeScript coding standard.",
   "repository": {
     "type": "git",

ts/eslint.js

@@ -37,6 +37,7 @@ module.exports = {
       'error',
       { allowExpressions: true, allowTypedFunctionExpressions: true },
     ],
+    '@typescript-eslint/explicit-member-accessibility': 'error',
     '@typescript-eslint/no-unused-vars': 'error',
     camelcase: 'off',
     'comma-dangle': 'off',