Added support for searching devices

[susch19]

• this way if you have many devices you can easily find the correct one
• removed the blur effect, as it didn't have a visual effect anymore, but did cost alot of perfomance
• fixed remove device function, since the code was never migrated so it just pooped the dialog instead of doing something
• started using the riverpod generator, since this will be easier to understand for new people, what it actually does
• added new log screen in the heater model, since these devices send logs which are interesting to see, when something doesn't work
• fixed connection beeing broke when one unfocuses the app, since on windows this isn't needed whatsover and on android the wrong check was used
• reworked the add devices dialog, so multiple devices can be added at the same time by ticking the checkbox of each one
• fix wrong svg colors
• cleanup of code, for less warnings, infos and errors from package upgrade