SF: Introduce struct surfaceflinger::Config

This pulls out all the individual configuration constants read by
SurfaceFlinger in its constructor, and moves them to a new
surfaceflinger::Config structure which is passed to the constructor.

All the initialization is the functionally the same, a few values turned
out to not be used, so were removed (mMaxGraphicBufferProducerListSize,
mGraphicBufferProducerListSizeLogThreshold). Otherwise all properties
read for the new structure consistently use android-base/properties.h to
read them.

To keep the argument count down, the SurfaceFlinger factory argument to
the constructor was moved to be stored in the new Config structure.

As a result of the change, SurfaceFlinger now only has one constructor.
The tests were using the other constructor (passing
SurfaceFlinger::skipInitiailization) to skip over the property reads to
help ensure a hermetic configuration of SurfaceFlinger. The tests can
now instead create create a minimally configured Config structure, and
pass that the structure.

The other changes were then to switch over to using the values in the
Config structure, both internally to SurfaceFlinger, as well as in other
files including Layer.cpp and DisplayDevice.cpp. In some cases, those
changes required altering the arguments to the function being called to
obtain the values, since originally some of the values where static
member data in SurfaceFlinger.

There were similar changes required for the tests and the fuzzers, to switch over,
including how some tests mutated the configuration values so that they
overall coverage was the same.

No new tests/fuzzing was added, though it should now be easier to extend
coverage.

Test: atest libsurfaceflinger_unittest
Bug: None

Change-Id: I8dc3c2317a92b256e58ec45190e24463032c2f8e