[host/mem/mgr] changes SandboxMemoryManager API to interact w/ CGM

- removes static layout from SandboxMemoryManager, adds SandboxMemorySections structure built
w/ the SandboxBuilder.
- updates paging to reflect usage of dynamic memory layout.
- interact with common APIs.
- add APIs to allow reading addressed memory sections in PEB from shared memory.

Signed-off-by: danbugs <[email protected]>

Author: danbugs