tr, add voices for missing letters

[akefeli]

Adding missing letters, also fixing the letter "K" with proper pronunciation

[petitlapin]

Thank you! I'm asking confirmation from our Turkish translator but for me it seems good.
Can you please update https://github.com/gcompris/GCompris-data/blob/master/voices/LICENSE#L29191 with the correct data?

Please note that github is just a mirror, so I'll report the commit directly once it is fine in https://invent.kde.org/education/gcompris-data/ which is the official repo.

[bitigchi]

Sounds good to me!

[bitigchi]

@akefeli, if you have free time would you consider redoing all of the alphabet? Having two distinctly different voices is not very ideal. Your recording quality is also much better, the other sounds have considerable amount of background hiss.

[akefeli]

Sure, I can try doing the full alphabet.

[bitigchi]

@akefeli, çok teşekkürler. Eğer katılmak isterseniz, KDE Türkiye ile ilgili konuları ve buradaki topluluk üzerinden organize ediyoruz. “Issues” kısmından ilgi bekleyen konuları görebilirsiniz. Bekleriz!