fix(prisma): add location to show unique constraint

This patch adds the "location" field to the show unique constraint. This
is required as the same brand _can_ have two different shows (with two
different collections) in the same season but in different locations.

For example, Maticevski had an Australia Spring 2015 RTW collection that
was distinct from (and included different looks than) their Paris Spring
2015 RTW collection (see links included below).

Ref: https://www.vogue.com/fashion-shows/spring-2015-ready-to-wear/maticevski
Ref: https://www.vogue.com/fashion-shows/australia-spring-2015/maticevski

prisma/migrations/20230730074359_add_location_to_show_unique_constraint/migration.sql

@@ -0,0 +1,11 @@
+/*
+  Warnings:
+
+  - A unique constraint covering the columns `[brandId,seasonId,sex,level,location]` on the table `Show` will be added. If there are existing duplicate values, this will fail.
+
+*/
+-- DropIndex
+DROP INDEX "Show_brandId_seasonId_sex_level_key";
+
+-- CreateIndex
+CREATE UNIQUE INDEX "Show_brandId_seasonId_sex_level_location_key" ON "Show"("brandId", "seasonId", "sex", "level", "location");

prisma/schema.prisma

@@ -945,9 +945,14 @@ model Show {
   brandId Int
 
   // A brand can only have a single show per season per sex (i.e. "menswear",
-  // "womenswear", or both) per level (i.e. "couture", "ready-to-wear", etc). 
+  // "womenswear", or both) per level (i.e. "couture", "ready-to-wear", etc) per
+  // location (e.g. an "Australia" collection alongside a "Paris" collection).
+  //
+  // Ex: https://www.vogue.com/fashion-shows/australia-spring-2015/maticevski
+  // Ex: https://www.vogue.com/fashion-shows/spring-2015-ready-to-wear/maticevski
+  //
   // This constraint was inspired by Vogue's URLs (e.g. /resort-2024/hermes). It 
   // may need adjustment in the future if there is ever a brand that presents 
   // twice during a single season (but that probably means I need more seasons).
-  @@unique([brandId, seasonId, sex, level])
+  @@unique([brandId, seasonId, sex, level, location])
 }