Pass file descriptors rather than filenames to Virt Manager.

This requires using a parcelable rather than a JSON file for the config.

Bug: 187181124
Test: atest VirtualizationTestCases
Change-Id: I1636010f5ed55da165f5acd82f1bd8b924e09b41
diff --git a/vm/src/main.rs b/vm/src/main.rs
index b0abf66..2f5d9e6 100644
--- a/vm/src/main.rs
+++ b/vm/src/main.rs
@@ -14,6 +14,7 @@
 
 //! Android VM control tool.
 
+mod config;
 mod run;
 mod sync;