l10n: Add the German translation team and initialize de.po

Signed-off-by: Ralf Thielow <[email protected]>
Signed-off-by: Jiang Xin <[email protected]>

Author: Ralf Thielow

po/TEAMS

@@ -5,6 +5,10 @@ Language:	da (Danish)
 Repository:	https://github.com/git-da/git-po/
 Leader:		Byrial Jensen <[email protected]>
 
+Language:	de (German)
+Repository:	https://github.com/ralfth/git-po-de
+Leader:		Ralf Thielow <[email protected]>
+
 Language:	is (Icelandic)
 Leader:		Ævar Arnfjörð Bjarmason <[email protected]>