tools: start implementing blob interface

Start implementing blob interface to handle sending BLOB protocol
commands.

Change-Id: I9eeb6c1b6f49d9b0332e156e02476e2b07850d64
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/tools/Makefile.am b/tools/Makefile.am
index 1d7d814..66cfa0e 100644
--- a/tools/Makefile.am
+++ b/tools/Makefile.am
@@ -10,4 +10,5 @@
 libupdater_la_SOURCES = \
 	updater.cpp \
 	bt.cpp \
-	lpc.cpp
+	lpc.cpp \
+	blob_handler.cpp