WIP

1. Implemented InstanceSetup method by checking if such volume exists in
MirrorGlobal's VolumeList.
2. enhanced Logger, added [Prefix]
3. fixed the header file, should not include wdm.h should include
fltKernel.h since we are developing a FS driver.
4. refactor the mirror.c moves a few functions out to volume_entry and
mirror_entry module.
5. added Status display in logger