[Feature Request] Custom icon support for Activities

[AngryHands]

Greetings Razeeman,

Thanks for your amazing application, that has nearly all the features of paid apps and even surpasses them in many ways.

So only thing I see as missing is custom icon support for activities. Importing custom icons could improve visual representation of activities, could boost motivation to continue tracking etc.

I don't know about the possible bugs that this request may create but the only bad situation I can imagine is an user importing a very large image then the app lagging to perform when the activity with custom icon present on the screen. Maybe this could be prevented with limiting the resolution of the image or compressing it when being imported.

Thanks for your efforts and I hope you'll find this idea useful.