Empire research initialisation

* When an empire is created, all technologies that have no dependencies
will be added as ongoing research with default priority and no points in
the empire research table.

legacyworlds-server-data/db-structure/parts/040-functions/040-empire.sql

@@ -45,6 +45,14 @@ BEGIN
 	INSERT INTO emp.resources ( empire_id , resource_name_id )
 		SELECT _name_id , resource_name_id FROM defs.resources;
 
+	-- Insert technologies that have no dependencies as research in progress
+	INSERT INTO emp.technologies_v2 ( empire_id , technology_name_id )
+		SELECT _name_id , technology_name_id
+			FROM defs.technologies
+				LEFT OUTER JOIN defs.technology_dependencies
+					USING ( technology_name_id )
+			WHERE techdep_id IS NULL;
+
 	-- Update resource mining quantities
 	UPDATE verse.planet_resources
 		SET pres_income = emp.mining_compute_extraction( _update_row )