Feature request: Allow uploading custom icons locally

[C1og]

I had a great experience with the Bonjourr extension. Thank you for developing such a useful Chrome extension.

[victrme]

Thanks @C1og!

I thought about adding this feature multiple times, but there is no easy way to implement that feature currently. Letting the browser store the icons in the memory/disk cache is so easy and efficient 99% of the time that I think we'll stick with it for now.