base: Introduce SubstratumService

Change-Id: I8c9f331ca7e4c68c35ea13bed587775ee4abeb30
Signed-off-by: Ivan Iskandar <ivan@prjkt.io>
Signed-off-by: Nicholas Chum <nicholas@prjkt.io>
Signed-off-by: Harsh Shandilya <harsh@prjkt.io>
Signed-off-by: Akhil Narang <akhilnarang.1999@gmail.com>
18 files changed