Split out libraries into SPM packages (#298)

Sources/Secretive/Views/NoStoresView.swift

@@ -0,0 +1,23 @@
+import SwiftUI
+
+struct NoStoresView: View {
+
+    var body: some View {
+        VStack {
+            Text("No Secure Storage Available").bold()
+            Text("Your Mac doesn't have a Secure Enclave, and there's not a compatible Smart Card inserted.")
+            Link("If you're looking to add one to your Mac, the YubiKey 5 Series are great.", destination: URL(string: "https://www.yubico.com/products/compare-yubikey-5-series/")!)
+        }.padding()
+    }
+    
+}
+
+#if DEBUG
+
+struct NoStoresView_Previews: PreviewProvider {
+    static var previews: some View {
+        NoStoresView()
+    }
+}
+
+#endif