feat: versioned migrations (#26)

* enable atlas migrations

* use embedded atlas migrations

* chores

* bad migration example

* tidy

* fix linter issues

* reset migration state

* sort slice before testing

* move temp write logic to migrations package

.gitignore

@@ -1,5 +1,5 @@
 # Project Specific
-backend/homebox-data/*
+backend/.data/*
 config.yml
 homebox.db
 .idea