Scope retrieving models with operator

[erikn69]

If you only want to search on a single custom attribute with a custom operator, you can use the modelScope like this

// returns all models that have a schemaless attribute `name` starting with `value`
$yourModel->withExtraAttributes('name', 'LIKE', 'value%')->get();
// returns all models that have a schemaless attribute `name` different that `value`
$yourModel->withExtraAttributes('name', '!=', 'value')->get();
// returns all models that have a schemaless attribute `number` greater than `10`
$yourModel->withExtraAttributes('number', '>', 10)->get();

[erikn69]

@freekmurze rebase with fixed tests

[freekmurze]

Thanks!