Add yml file for F-Droid repo.

com.hyperling.sunset_alarm.yml

@@ -0,0 +1,16 @@
+AuthorName: 'Chad Michael "Hyperling" Greenwood'
+AuthorEmail: 'me@hyperling.com'
+AuthorWebSite: 'https://hyperling.com/about/'
+Donate: 'https://hyperling.com/donate/'
+Liberapay: 'HyperVegan'
+Bitcoin: 'bc1qsfe8dkvry3d34kztz449gkq67wq8fu2nkgfkh0'
+Litecoin: 'ltc1qavmpu5d6ljntxsd6jj548m4yys83zwscl0dzkx'
+IssueTracker: 'https://hyperling.com/contact/'
+Categories:
+- fdroid
+- hyperling
+- utilities
+Name: Sunset Timer
+Summary: 'Play a notification at your chosen time before sunset.'
+SourceCode: 'https://git.hyperling.com/me/flutter-sunset-alarm/'
+WebSite: 'https://hyperling.com/apps/#sunset'