AppDbUpdater: Extract sql commands as embedded resources

Elwig/Resources/Sql/01-02.sql

@@ -0,0 +1,7 @@
+-- schema version 1 to 2
+
+DROP VIEW v_area_commitment;
+
+ALTER TABLE delivery_part DROP COLUMN weighing_reason;
+
+ALTER TABLE delivery_part ADD COLUMN weighing_reason TEXT CHECK(NOT (manual_weighing = FALSE AND weighing_reason IS NOT NULL));