Provide make targets and build configuration to create a shared object
for other systems/applications to use to control keyboard LEDs without
the need for instantiating the g810-led process.
Provide make targets for installing library and development files into
environments, such as the current system or package builders.
Currently preserves precious behavior of building g810-led binary as
statically linked. Provides an alternative build target of "bin-linked"
which will create a dynamically linked variant.
Signed-off-by: Kevin Pearson <pearson.kevin.m@gmail.com>