feat(eslint): Create file & add env variable pointing to it

common/.config/templates/.eslintrc.json

@@ -0,0 +1,15 @@
+{
+    "extends": ["eslint:recommended", "@typescript-eslint/recommended"],
+    "parser": "@typescript-eslint/parser",
+    "parserOptions": {
+        "ecmaVersion": 2020,
+        "sourceType": "module",
+        "ecmaFeatures": {
+            "jsx": true
+        }
+    },
+    "rules": {
+        "no-unused-vars": "error",
+        "no-undef": "error"
+    }
+}