meta-app-framework: applaunchd: update for gRPC addition

meta-app-framework: applaunchd: update for gRPC addition

Changes to facilitate building gRPC enabled versionm of applaunchd:
- Bump SRCREV to pick up gRPC changes
- Add required protobuf and gRPC dependencies to DEPENDS
- Add new systemd unit for standalone gRPC API daemon

Bug-AGL: SPEC-4559

Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Change-Id: I9daeabccc0bb7f7a730568c2b13f096a469ff82b
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/c/AGL/meta-agl/+/28010
Tested-by: Jenkins Job builder account
ci-image-build: Jenkins Job builder account
ci-image-boot-test: Jenkins Job builder account
Reviewed-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>