Revise require imports (#3071)

- order (external first)
- remove superfluous file extensions
- new line after imports
- deconstruct (only one time (in `check_config.js`))
- fix path (only one time (in `global-setup.js`))

package.json

@@ -50,6 +50,7 @@
 	"homepage": "https://magicmirror.builders",
 	"devDependencies": {
 		"eslint-config-prettier": "^8.7.0",
+		"eslint-plugin-import": "^2.27.5",
 		"eslint-plugin-jest": "^27.2.1",
 		"eslint-plugin-jsdoc": "^40.1.0",
 		"eslint-plugin-prettier": "^4.2.1",