Update Turkmen translation

Add Turkmen translation

Co-authored-by: Hosted Weblate <hosted@weblate.org>
Co-authored-by: Hydyr Sopyyew <sopyyewhydyr46@gmail.com>

locales/tk.json

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+{
+    "Add to playlist": "Aýdym sanawyna goş",
+    "Add to playlist: ": "Pleýliste goş: ",
+    "Answer": "Jogap",
+    "Search for videos": "Wideo gözläň",
+    "The Popular feed has been disabled by the administrator.": "Trende bolan administrator tarapyndan ýapyldy."
+}