Move create and destroy display APIs into server.

Move the SurfaceFlinger create and destroy APIs into display server
package to remove confusion about who can create a display in SF. SF
already guards the API call so only system and shell can create
displays, but we'd like to route all display creations through DMS going
forward. There were a few places that were calling createDisplay
directly through the hidden API to call into SF that were running as
Shell. This makes it difficult to make SF updates since it forces
backwards compatibility on unsupported APIs.

The SurfaceControl APIs will still be around temporarily
because they are being called from external places. They will be
replaced with calls into DisplayManger in later changes.

Test: Displays are created
Bug: 237664947
Change-Id: I212437242665f1ebfb2d041d5b91235e7820a45a