Add ts-<lang>, ts-all, commit-ts rules for translations

Add ts-<lang>, ts-all, commit-ts rules to src/sdk/sdk.pro
for translator's convenience.

Change-Id: Ie75641870e78b78f4db04ec9c7e4460b86d079c8
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>