Add epanet input schema

sql/section_drop/19.reactions.sql

@@ -0,0 +1,19 @@
+-- [REACTIONS]
+
+DROP TABLE REACTIONS_ROUGHNESS_CORRELATION;
+
+DROP TABLE REACTIONS_LIMITING_POTENTIAL;
+
+DROP TABLE REACTIONS_TANK;
+
+DROP TABLE REACTIONS_PIPE;
+
+DROP TYPE REACTIONS_PIPE_PARAM;
+
+DROP TABLE REACTIONS_GLOBAL;
+
+DROP TYPE REACTIONS_GLOBAL_PARAM;
+
+DROP TABLE REACTIONS_ORDER;
+
+DROP TYPE REACTIONS_ORDER_PARAM;