add tamil(ta.json5) translation file (DSpace#4426)

* add tamil(ta.json5) file

* remove Trailing spaces

Author: GauravD2t

config/config.example.yml

@@ -322,6 +322,9 @@ languages:
   - code: sv
     label: Svenska
     active: true
+  - code: ta
+    label: தமிழ்
+    active: true
   - code: tr
     label: Türkçe
     active: true