urg: add hash file

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/urg/urg.hash

@@ -0,0 +1,2 @@
+# Locally calculated
+sha256	b2cab7e539c90c60fc99a2350a42b5d5390ff952b694b196c3cbb54623cfee7f	urg-0.8.18.zip