Make RuleBuilder methods take Paths

There are no more Make paths being used in Soong now that
dexpreopting and hiddenapi are in Soong. Use the Path types
in the inputs to RuleBuilder, and fix all users of RuleBuilder.

Test: all soong tests
Test: m checkbuild
Change-Id: I886f803d9a3419a43b2cae412537645f94c5dfbf