Add README file in Turkish

PR #2514 <https://github.com/Genymobile/scrcpy/pull/2514>

Signed-off-by: Romain Vimont <rom@rom1v.com>

README.md

@@ -875,5 +875,6 @@ This README is available in other languages:
 - [Español (Spanish, `sp`) - v1.17](README.sp.md)
 - [简体中文 (Simplified Chinese, `zh-Hans`) - v1.17](README.zh-Hans.md)
 - [繁體中文 (Traditional Chinese, `zh-Hant`) - v1.15](README.zh-Hant.md)
+- [Turkish (Turkish, `tr`) - v1.18](README.tr.md)
 
 Only this README file is guaranteed to be up-to-date.