Resize screens as well when resizing scene

[SimonDanisch]

We've been having resize!(scene/fig, w, h) for a long time, but they never actually resized the Screen.
With this PR, resize!(fig, w, h) works finally as expected.

[MakieBot]

Compile Times benchmark

Note, that these numbers may fluctuate on the CI servers, so take them with a grain of salt. All benchmark results are based on the mean time and negative percent mean faster than the base branch. Note, that GLMakie + WGLMakie run on an emulated GPU, so the runtime benchmark is much slower. Results are from running:

using_time = @ctime using Backend
# Compile time
create_time = @ctime fig = scatter(1:4; color=1:4, colormap=:turbo, markersize=20, visible=true)
display_time = @ctime Makie.colorbuffer(display(fig))
# Runtime
create_time = @benchmark fig = scatter(1:4; color=1:4, colormap=:turbo, markersize=20, visible=true)
display_time = @benchmark Makie.colorbuffer(display(fig))

	using	create	display	create	display
GLMakie	10.63s (10.55, 10.73) 0.05+-	1.04s (1.03, 1.06) 0.01+-	708.64ms (693.47, 765.59) 25.27+-	9.54ms (9.46, 9.61) 0.06+-	136.82ms (135.61, 137.88) 0.88+-
master	10.62s (10.59, 10.64) 0.02+-	1.05s (1.04, 1.06) 0.01+-	698.85ms (693.96, 707.25) 4.42+-	9.54ms (9.46, 9.66) 0.07+-	135.69ms (133.99, 136.63) 0.88+-
evaluation	+0.17%, 0.02s invariant (0.46d, 0.42p, 0.04std)	-0.99%, -0.01s invariant (-1.06d, 0.07p, 0.01std)	+1.38%, 9.79ms invariant (0.54d, 0.35p, 14.85std)	+0.03%, 0.0ms invariant (0.05d, 0.93p, 0.06std)	+0.83%, 1.13ms slower X (1.29d, 0.03p, 0.88std)
CairoMakie	9.56s (9.43, 9.74) 0.11+-	1.05s (1.04, 1.06) 0.01+-	229.17ms (227.74, 231.08) 1.29+-	9.45ms (9.38, 9.56) 0.06+-	5.57ms (5.50, 5.62) 0.04+-
master	9.48s (9.38, 9.57) 0.07+-	1.04s (1.02, 1.09) 0.02+-	229.83ms (227.09, 234.52) 2.48+-	9.50ms (9.39, 9.87) 0.17+-	5.67ms (5.53, 6.02) 0.17+-
evaluation	+0.88%, 0.08s invariant (0.93d, 0.11p, 0.09std)	+0.44%, 0.0s invariant (0.26d, 0.64p, 0.02std)	-0.29%, -0.66ms invariant (-0.33d, 0.55p, 1.89std)	-0.54%, -0.05ms invariant (-0.40d, 0.48p, 0.12std)	-1.76%, -0.1ms invariant (-0.79d, 0.18p, 0.11std)
WGLMakie	15.73s (15.48, 15.97) 0.20+-	1.53s (1.51, 1.58) 0.03+-	15.17s (14.82, 15.35) 0.19+-	19.97ms (19.51, 20.36) 0.29+-	1.37s (1.33, 1.42) 0.03+-
master	15.69s (15.48, 16.01) 0.20+-	1.53s (1.48, 1.61) 0.04+-	15.08s (14.83, 15.53) 0.26+-	20.52ms (19.18, 21.51) 0.88+-	1.40s (1.34, 1.45) 0.04+-
evaluation	+0.22%, 0.04s invariant (0.18d, 0.75p, 0.20std)	+0.13%, 0.0s invariant (0.06d, 0.91p, 0.03std)	+0.57%, 0.09s invariant (0.37d, 0.50p, 0.23std)	-2.75%, -0.55ms invariant (-0.84d, 0.16p, 0.58std)	-2.40%, -0.03s invariant (-0.94d, 0.10p, 0.03std)