Feature/plate editor (#115)

* Add plate editor

core/.eslintrc.js

@@ -55,6 +55,24 @@ module.exports = {
         caughtErrorsIgnorePattern: '^_',
       },
     ],
+    '@typescript-eslint/no-restricted-imports': [
+      'error',
+      {
+        patterns: [
+          {
+            group: ['@mui/*/*/*', '!@mui/material/test-utils/*'],
+            message: 'Do not import material imports as 3rd level imports',
+            allowTypeImports: true,
+          },
+          {
+            group: ['@mui/material', '!@mui/material/'],
+            message: 'Please import material imports as defaults or 2nd level imports',
+            allowTypeImports: true,
+          },
+        ],
+      },
+    ],
+    'import/prefer-default-export': 'error',
   },
   plugins: ['babel', '@emotion', 'cypress', 'unicorn', 'react-hooks'],
   settings: {
@@ -62,9 +80,7 @@ module.exports = {
       version: 'detect',
     },
     'import/resolver': {
-      node: {
-        extensions: ['.js', '.jsx', '.ts', '.tsx'],
-      },
+      typescript: {}, // this loads <rootdir>/tsconfig.json to eslint
     },
     'import/core-modules': ['src'],
   },