Deprecate implicit .U() and .S() syntax for literal bit extracts (backport #2534) (#2559)

* Deprecate .U() and .S() syntax for literal bit extracts (#2534)

(cherry picked from commit cadaf33a

)

# Conflicts:
#	macros/src/main/scala/chisel3/internal/sourceinfo/SourceInfoTransform.scala

* Fix backport conflict (#2560)

Co-authored-by: Jared Barocsi <82000041+jared-barocsi@users.noreply.github.com>