Perfprofd: Add string-based binder interface

Add a "weakly-typed" interface that works similar to the shellCommand
implementation, encoding parameters into a string decoded by the
ConfigReader.

(cherry picked from commit 9301b6f524b8267f14c88b0e5e2ed64bbc186fd4)

Bug: 73175642
Test: mmma system/extras/perfprofd
Merged-In: I9a7ad4452ba7a040906e237a76b63e50fbe5aa24
Change-Id: I9a7ad4452ba7a040906e237a76b63e50fbe5aa24
2 files changed