feat: Updates to use swift-validations for database.

Sources/DatabaseClient/Internal/Array+validator.swift

@@ -0,0 +1,48 @@
+import Validations
+
+extension Validator {
+
+  static func validate<Child: Validatable>(
+    _ toChild: KeyPath<Value, [Child]>
+  )
+    -> Self
+  {
+    self.mapValue({ $0[keyPath: toChild] }, with: ArrayValidator())
+  }
+
+  static func validate<Child: Validatable>(
+    _ toChild: KeyPath<Value, [Child]?>
+  )
+    -> Self
+  {
+    self.mapValue({ $0[keyPath: toChild] }, with: ArrayValidator().optional())
+  }
+}
+
+extension Array where Element: Validatable {
+  static func validator() -> some Validation<Self> {
+    ArrayValidator<Element>()
+  }
+}
+
+struct ArrayValidator<Element>: Validation where Element: Validatable {
+  func validate(_ value: [Element]) throws {
+    for item in value {
+      try item.validate()
+    }
+  }
+}
+
+struct ForEachValidator<T, E>: Validation where T: Validation, T.Value == E {
+  let validator: T
+
+  init(@ValidationBuilder<E> builder: () -> T) {
+    self.validator = builder()
+  }
+
+  func validate(_ value: [E]) throws {
+    for item in value {
+      try validator.validate(item)
+    }
+  }
+}