title: Flutter : How to upload image to firestore in form
body: <p>Hay, I'm new in firestore and a little bit confused about uploading data to firestore. let's take an example, I have a form format like this :</p>
  <p><a href="https://i.stack.imgur.com/HRrrl.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/HRrrl.png" alt="enter image description here" /></a></p>
  <p>so, there is a data (name, DoB) form and upload image form. <em>as far I know</em> is to store data collection (like name and Date of Brith section) is using the cloud_firestore plugin, otherwise to store the image file is using firebase_store plugin.</p>
  <p>then, how do I use both plugins at the same time when uploading forms like this? or is there another method to upload image with a form?</p>
  <p>Thanks.</p>