Add a method for libbinder to wrap an accessor in a delegator

Libbinder is the only place with the IAccessorDelegator class so it must
be responsible for wrapping the IAccesses with an IAccessorDelegator.

This is used when the process with the permissions to connect to the
server over binder RPC is in a seperate process from the process that
wants to serve the IAccessor binder.

Test: atest vm_accessor_test binderRpcTest
Bug: 358427181

Change-Id: I0839f7d1b466ba9bfb13031596523314718d3677
diff --git a/libs/binder/rust/src/lib.rs b/libs/binder/rust/src/lib.rs
index 0e8e388..f7f3f35 100644
--- a/libs/binder/rust/src/lib.rs
+++ b/libs/binder/rust/src/lib.rs
@@ -123,7 +123,7 @@
 #[cfg(not(trusty))]
 pub use state::{ProcessState, ThreadState};
 #[cfg(not(any(android_vendor, android_vndk)))]
-pub use system_only::{Accessor, ConnectionInfo};
+pub use system_only::{delegate_accessor, Accessor, ConnectionInfo};
 
 /// Binder result containing a [`Status`] on error.
 pub type Result<T> = std::result::Result<T, Status>;