Remove MakieLayout module

[SimonDanisch]

Pretty much the same as #2007 just for MakieLayout.
The extra module has just been leading to repeating code without real benefits, and we have been acting like Makie is the sole API exporter anyways.
This also removes the extra __init__ and combines the precompiles and adds some new ones.
Should also not be breaking due to @deprecate_binding, although the question remains when to remove the @deprecate_binding

[MakieBot]

Compile Times benchmark

Note, that these numbers may fluctuate on the CI servers, so take them with a grain of salt.

using time

master:  10.96 < 11.02 > 11.08, 0.04+-
pr:      10.90 < 11.03 > 11.07, 0.06+-
speedup: 1.00 < 1.00 > 1.01, 0.00+-
median:  +0.11% => invariant

This PR does not change the using time.

ttfp time

master   31.14 < 31.33 > 31.46, 0.11+-
pr       31.04 < 31.19 > 31.38, 0.13+-
speedup: 1.00 < 1.00 > 1.01, 0.00+-
median:  -0.42% => invariant

This PR does not change the ttfp time.

[jkrumbiegel]

I think you didn't check the docs for MakieLayout occurrences right? I know there's a couple mentions on the Axis page at least, so it would be good to also remove those