Provide a single box on the homepage to allow user to perform a quick single transliteration

[ronaldtse]

This depends on the following:

• When a user wants to transliterate a text, they might not know what language or script it is in. We need to auto-detect that. #89
• When a user wants to transliterate a text, they might not know what transliteration system to select. We need to provide in priority some "default". And might as well provide all transliteration systems output that match that language/script combo. #90
• When transliterating languages that use Arabic scripts that require diacriticization, we must provide diacritized transliteration outputs #91

[ronaldtse]

@webdev778 can you please help handle these 3 issues soon? Thanks.