rhi: Enable msaatexture manual test on OpenGL

...now that a recent path enables MultisampleTextures for ES >= 3.1 and
GL 3.x and up.

Just need to make sure the .qsb contains something for OpenGL as well.

While we are at it, make updated .qsb files for all the commonly used
shaders since what we had before was version 4. Bump them to version 5.

Change-Id: If2040f4894e6360d1ebd5daf7e698508e5e6e42e
Reviewed-by: Andy Nichols <andy.nichols@qt.io>

tests/manual/rhi/shared/buildshaders.bat

@@ -2,4 +2,4 @@ qsb --glsl "100 es,120" --hlsl 50 --msl 12 -c color.vert -o color.vert.qsb
 qsb --glsl "100 es,120" --hlsl 50 --msl 12 -c color.frag -o color.frag.qsb
 qsb --glsl "100 es,120" --hlsl 50 --msl 12 -c texture.vert -o texture.vert.qsb
 qsb --glsl "100 es,120" --hlsl 50 --msl 12 -c texture.frag -o texture.frag.qsb
-qsb --hlsl 50 --msl 12 -c texture_ms4.frag -o texture_ms4.frag.qsb
+qsb --glsl "310 es,150" --hlsl 50 --msl 12 -c texture_ms4.frag -o texture_ms4.frag.qsb