create library for mainline module

This library is a temporary work to link all mainline module using
statemachine.
Once this is done, we will be able to move the library to
frameworks/libs/modules-utils

also fix some typo in state* files

Cherry picked from aosp/1818896

Bug: 198418216
Tag: #refactor
Test: None
Merged-In: I1bec7c7bdb25bf3397a742a356aa1f18fddf7d89
Change-Id: I1bec7c7bdb25bf3397a742a356aa1f18fddf7d89