add create/edit functionality

device-app/resources/views/owners/create.blade.php

@@ -0,0 +1,17 @@
+<form method="POST" action="/devices/{{ $device->device_id }}/owners">
+    @csrf
+    <label for="rz_username">rz_username:</label>
+    <input type="text" id="rz_username" name="rz_username" value="{{old('rz_username')}}" required>
+    @error('rz_username')
+        <p>{{ $message }}</p>
+    @enderror
+    <br />
+    <label for="timestamp_owner_since">timestamp_owner_since:</label>
+    <input type="text" id="timestamp_owner_since" name="timestamp_owner_since"
+        value="{{old('timestamp_owner_since')}}" required>
+    @error('timestamp_owner_since')
+        <p>{{ $message }}</p>
+    @enderror
+    <br />
+    <input type="submit" value="Submit">
+</form>