add price table

schema/20190106-1.sql

@@ -0,0 +1,13 @@
+create table public.card_price
+(
+  card uuid not null
+  constraint card_price_pk
+  primary key,
+  price_n float default 0 not null,
+  price_f float default 0 not null,
+  ctime timestamp with time zone default current_timestamp not null
+);
+alter table public.card_price
+  add constraint card_price_cards_id_fk
+    foreign key (card) references cards
+      on delete cascade;