Add Arabic NLU Dataset and examples

[MahmoudWahdan]

The idea is to add Arabic NLU Dataset and examples, opening the opportunity for more examples in non-English languages and support Arabic users.

[amir-ma71]

i used your project for financial text in Persian and it works well

[MahmoudWahdan]

@amir-ma71 Nice to hear that!
Could you please make pull request for an example, if you can?