PGSQL EstateStore create estate_settings_id SEQUENCE

Missing creation for estate_settings_id sequence causes first run
to fail unless manually added.

Signed-off-by: UbitUmarov <ajlduarte@sapo.pt>

OpenSim/Data/PGSQL/Resources/EstateStore.migrations

@@ -2,6 +2,16 @@
 
 BEGIN TRANSACTION;
 
+-- ----------------------------
+-- SEQUENCE estate_settings_id
+-- ----------------------------
+CREATE SEQUENCE IF NOT EXISTS "public"."estate_settings_id"
+  INCREMENT 100
+  MINVALUE 1
+  MAXVALUE 9223372036854775807
+  START 100
+  CACHE 1;
+
 -- ----------------------------
 --  Table structure for estate_groups
 -- ----------------------------