Show some kind of confirmation that the report has been sent from the UI (show an error message if not successful)

[alt-tab-macos-bot]

This issue was opened by a bot after a user submitted feedback through the in-app form.

Message:

I think I just accidentally sent a duplicate error report to github (from AltTab UI -> "Send feedback..." button) because the UI made me think the report wasn't sent successfully:

Steps / what I did:

1. I'm using LuLu (https://objective-see.org/products/lulu.html, it's basically an extra firewall / Little Snitch wannabe) and I have the setting that apps have to be given an explicit permission in a LuLu dialog before they have access to the Internet
2. AltTab -> About -> Clicked the "Send feedback..." button
3. Wrote the feedback
4. (this steps is probably not relevant) I unchecked the "Send debug profile" because it was not a bug
5. Clicked Send
6. (maybe there was a confirmation delay first) LuLu dialog appears, I gave AltTab temporary access to the Internet
7. Because there was no confirmation dialog, I suspected that the bug was silently rejected because I was too slow to give access to the Internet
8. Step 2 again: AltTab -> About -> Click "Send feedback..."
9. The feedback I had written earlier (in step 3) was still there in this very text box (!) so I thought it had not been sent
10. Accidentally sent a duplicate (because of step 9)

Expected:

• explicitly tell the user whether the feedback was sent ok or if there was an error
• if successful, clear the "Send feedback" window so that if the user wants to send more feedback, the dialog starts fresh, otherwise open the feedback window again or something?