Added expanding TextField

Sources/SwiftfulUI/Views/ExpandingTextField.swift

@@ -0,0 +1,50 @@
+//
+//  ExpandingTextFieldPreview.swift
+//
+//
+//  Created by Brenden French on 3/21/24.
+//
+
+import SwiftUI
+
+fileprivate struct ExpandingTextFieldPreview: View {
+
+	@State private var text = """
+This is a wrapper around a normal SwiftUI TextField. It expands to fit multiple lines of text because the axis is set to vertical.
+
+Here is the code for it:
+👉 TextField("", text: $text, axis: .vertical)
+
+Normally this only works on iOS 16 or newer, but this wrapper also uses the single line TextField as a fallback to retain compatibility with older versions of iOS.
+
+Here is the code for this SwiftfulUI wrapper:
+👉 ExpandingTextField("", text: $text)
+"""
+
+	var body: some View {
+		ExpandingTextField("", text: $text)
+	}
+}
+
+public struct ExpandingTextField: View {
+
+	var placeholder: String
+	@Binding private var text: String
+
+	public init(_ placeholder: String, text: Binding<String>) {
+		self.placeholder = placeholder
+		self._text = text
+	}
+
+	public var body: some View {
+		if #available(iOS 16.0, *) {
+			TextField(placeholder, text: $text, axis: .vertical)
+		} else {
+			TextField(placeholder, text: $text)
+		}
+	}
+}
+
+#Preview{
+	ExpandingTextFieldPreview()
+}