[Bug] `orWhere` cannot be called without an operator

[stevebauman]

Environment:

• LDAP Server Type: N/A
• PHP Version: N/A

Describe the bug:

Similarly to Laravel's Eloquent, LdapRecord where queries can omit the operator for an assumed equals clause:

User::where('foo', 'bar');

However, orWhere does not support the same:

User::orWhere('foo', 'bar'); // throws Exception "Invalid LDAP filter operator [bar]"