Added the catalogue models and seed to support phase 5 of the POC prototype in the Persistence package.

Packages/Persistence/Sources/Internal/Migrations/AddShopRegistration.swift

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+import FluentKit
+
+/// Adds the seller kind and the business registration to shops.
+///
+/// Registered ahead of ``SeedCatalogue``, whose model writes the columns. One column per update: SQLite adds no more in a statement.
+struct AddShopRegistration: AsyncMigration {
+
+    // MARK: Constants
+
+    private static let columns = ["kind", "kvk_number", "vat_id", "legal_name"]
+
+    // MARK: Methods
+
+    func prepare(on database: Database) async throws {
+        for column in Self.columns {
+            try await database.schema(ShopRecord.schema)
+                .field(.string(column), .string)
+                .update()
+        }
+    }
+
+    func revert(on database: Database) async throws {
+        for column in Self.columns.reversed() {
+            try await database.schema(ShopRecord.schema)
+                .deleteField(.string(column))
+                .update()
+        }
+    }
+
+}

Packages/Persistence/Sources/Internal/Migrations/CreateCollecting.swift

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+import FluentKit
+
+/// Creates the `wants` table, and the `series` table seeded with the runs the demo listings belong to.
+struct CreateCollecting: AsyncMigration {
+
+    // MARK: Methods
+
+    func prepare(on database: Database) async throws {
+        try await database.schema(WantRecord.schema)
+            .id()
+            .field("user_id", .uuid, .required, .references(UserRecord.schema, "id", onDelete: .cascade))
+            .field("title", .string, .required)
+            .field("min_grade", .double)
+            .field("max_price_cents", .int)
+            .field("slabbed_only", .bool, .required)
+            .field("alerts", .bool, .required)
+            .field("created_at", .datetime, .required)
+            .field("seen_at", .datetime, .required)
+            .create()
+        try await database.schema(SeriesRecord.schema)
+            .id()
+            .field("slug", .string, .required)
+            .field("name", .string, .required)
+            .field("publisher", .string, .required)
+            .field("years", .string, .required)
+            .field("issue_count", .int, .required)
+            .field("blurb", .string, .required)
+            .unique(on: "slug")
+            .create()
+
+        for series in Seed.series {
+            try await SeriesRecord(series).save(on: database)
+        }
+    }
+
+    func revert(on database: Database) async throws {
+        try await database.schema(SeriesRecord.schema).delete()
+        try await database.schema(WantRecord.schema).delete()
+    }
+
+}