Leverage upstream database seeding helper

This logic is being incorporated directly into StructuredQueries.

Author: stephencelis

Package.swift

@@ -33,7 +33,8 @@ let package = Package(
     .package(url: "https://github.com/pointfreeco/swift-dependencies", from: "1.9.0"),
     .package(url: "https://github.com/pointfreeco/xctest-dynamic-overlay", from: "1.5.0"),
     .package(url: "https://github.com/pointfreeco/swift-sharing", from: "2.3.0"),
-    .package(url: "https://github.com/pointfreeco/swift-structured-queries", from: "0.1.1"),
+//    .package(url: "https://github.com/pointfreeco/swift-structured-queries", from: "0.1.1"),
+    .package(url: "https://github.com/pointfreeco/swift-structured-queries", branch: "seeds"),
   ],
   targets: [
     .target(

SharingGRDB.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -53,28 +53,8 @@ extension Database {
     @InsertValuesBuilder<any StructuredQueriesCore.Table>
     _ build: () -> [any StructuredQueriesCore.Table]
   ) throws {
-    var seeds = build()
-    while !seeds.isEmpty {
-      guard let first = seeds.first else { break }
-      let firstType = type(of: first)
-
-      if let firstType = firstType as? any TableDraft.Type {
-        func insertBatch<T: TableDraft>(_: T.Type) throws {
-          let batch = Array(seeds.lazy.prefix { $0 is T }.compactMap { $0 as? T })
-          defer { seeds.removeFirst(batch.count) }
-          try T.PrimaryTable.insert(batch).execute(self)
-        }
-
-        try insertBatch(firstType)
-      } else {
-        func insertBatch<T: StructuredQueriesCore.Table>(_: T.Type) throws {
-          let batch = Array(seeds.lazy.prefix { $0 is T }.compactMap { $0 as? T })
-          defer { seeds.removeFirst(batch.count) }
-          try T.insert(batch).execute(self)
-        }
-
-        try insertBatch(firstType)
-      }
+    for insert in Seeds(build) {
+      try insert.execute(self)
     }
   }
 }