Add table for manual route construction

sql/init.sql

@@ -200,3 +200,6 @@ DROP TABLE IF EXISTS ship_geometry, ship_parameters, ship CASCADE;
 --
 -- Initial ports data (moved to the bottom because after updating file something gone wrong)
 \i ./sql/voyage/port_create.sql
+--
+-- Initial route points data
+\i ./sql/voyage/route_point_create.sql

sql/voyage/route_point_create.sql

@@ -0,0 +1,16 @@
+DROP TABLE IF EXISTS route_point;
+
+CREATE TABLE IF NOT EXISTS route_point (
+    id INT GENERATED ALWAYS AS IDENTITY, -- ID of the route point
+    project_id INT, -- ID of the project
+    ship_id INT, -- ID of the ship
+    pol_id INT NOT NULL, -- ID of the POL (Point Of Loading)
+    pod_id INT NOT NULL, -- ID of the POD (Point Of Discharge)
+    latitude FLOAT NOT NULL, -- Value of latitude
+    longitude FLOAT NOT NULL, -- Value of longitude
+    point_order INT NOT NULL, -- Order of route point
+    CONSTRAINT route_point_pk PRIMARY KEY (id),
+    CONSTRAINT route_point_pol_fk FOREIGN KEY (pol_id) REFERENCES port (id),
+    CONSTRAINT route_point_pod_fk FOREIGN KEY (pod_id) REFERENCES port (id),
+    CONSTRAINT unique_route_point_order UNIQUE (project_id, ship_id, pol_id, pod_id, point_order) DEFERRABLE INITIALLY DEFERRED
+);