Mock static initialization order 13

cpp static order initialization is not guarantee.
In order to avoid the mess, we need to have a lazy init schema.
Replacing all mock map in system/device
Add a way to get the number of entry in the mock map

Bug: 265217208
Test: atest --host
Change-Id: I512e3f85ed17d77541358ebcce2ff9f92579d1ec