Move example resources to example folder

[tholzheim]

currently a few resources are on the parent folder of the project

• https://github.com/justpy-org/justpy/blob/master/papillon.jpg
• https://github.com/justpy-org/justpy/tree/master/components

but are only used by some examples. These resources should be moved to the examples folder or to the example itself.

For the static_test the problem of the static folder in the context of the demo_browser needs to be solved. https://github.com/justpy-org/justpy/blob/7e49c1dc69c490cc17a47f66d0ccad329c7383a3/examples/tutorial/static/static_test.py#L4-L7

[WolfgangFahl]

see #685