Depricate GalileoMap in favour of egui

[Maximkaaa]

GalieloMap is intended only for development purposes to easily create a new map application and try things out. As such it is not very useful as a part of Galileo library. It also has a lot of issue on different platforms that might be resolved by using a better application bootstrapping solution.

A good approach would be to create a separate crate with a simple egui widget that would add map to a egui application. This would allow us to use eframe to bootstrap examples easily, and would also provide a good example of how Galileo can be integrated into an UI framework.

Changing all the examples to using eframe instead of GalileoMap would probably fix #102 and #63 .