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

Packages/Persistence/Sources/Internal/Models/WantRecord.swift

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+import FluentKit
+import Foundation
+
+/// A FluentKit model of a single `wants` row: a copy an account is looking for.
+final class WantRecord: Model, @unchecked Sendable {
+
+    // MARK: Properties
+
+    static let schema = "wants"
+
+    @ID(key: .id)
+    var id: UUID?
+
+    @Parent(key: "user_id")
+    var user: UserRecord
+
+    @Field(key: "title")
+    var title: String
+
+    @OptionalField(key: "min_grade")
+    var minGrade: Double?
+
+    @OptionalField(key: "max_price_cents")
+    var maxPriceCents: Int?
+
+    @Field(key: "slabbed_only")
+    var slabbedOnly: Bool
+
+    @Field(key: "alerts")
+    var alerts: Bool
+
+    @Field(key: "created_at")
+    var createdAt: Date
+
+    /// When the account last looked at the want; matches listed later are new to them.
+    @Field(key: "seen_at")
+    var seenAt: Date
+
+    // MARK: Initializers
+
+    init() {}
+
+}