Instead of using datastructure that are tailored to our line by line
renderer and draw functions, use more generic and future proof data that
are easier to handle by hardware accelerator, and may be easier to
stabilize.
The screenshots from the screenshots test have to be re-done
because the rounding is different
Note: the C++ API DrawTextureArgs is not exposed yet
And call `extern crate std` when the feature is enabled.
I've read this is the good practice on how to do it.
So that the std prelude is no longer included automatically.
There is then less difference between std and and no-std build which
should avoid surprises in the CI when we use things from the prelude.
The downside is that there is a bit of churn in the tests
