This removes all hardware.* captouch calls from mpy and ports the entire
API to captouch.*.

Internally in C, we have unified all API calls under one
st3m_captouch_read call which lets the user access structured data in
any way they want.

This is an annoyingly large change, but the gist of it is that we:

1. Move ctx into components/ctx
2. Move uctx into usermodule/mp_uctx.c
3. Split out uctx config into ctx_config.h and share it with the
   simulator.
4. Delete a bunch of unused ctx files
5. Flip some ctx bits for speed.
6. Draw the rest of the owl, ie. implement a dedicated rasterizer task
   in components/st3m.

This removes some leftover Python code that still used the old display_*
calls for drawing instead of ctx.

We are now left only with display_update, which we will replace by the
new graphics stack soon.

Stupidly large diff, I got carried away.

This makes the simulator one step closer to be usable: we now have
petal input and an actually fast UI/renderer.

This implements a basic Python simulator for the badge. It currently
can't do much other than just displaying the main selection screen, as
it implements no inputs.