tpm: Add emulator module

Emulator module adds methods required to communicate with swtpm
over Ctrl and Data channels.

Signed-off-by: Praveen K Paladugu <prapal@linux.microsoft.com>
Co-authored-by: Sean Yoo <t-seanyoo@microsoft.com>

tpm/src/lib.rs

@@ -6,6 +6,7 @@
 #[macro_use]
 extern crate log;
 
+pub mod emulator;
 pub mod socket;
 
 use anyhow::anyhow;