add clang-tidy

This commit implements a clang-tidy file, and makes some changes to get
it to pass.  Most changes are naming or mechanical in nature.

Tested:
Clang-tidy now passes.

Signed-off-by: Ed Tanous <ed@tanous.net>
Change-Id: Ia441e4801b6c8725421d160c531c5df141f255d4
diff --git a/tests/test_HwmonTempSensor.cpp b/tests/test_HwmonTempSensor.cpp
index 0368064..2be603a 100644
--- a/tests/test_HwmonTempSensor.cpp
+++ b/tests/test_HwmonTempSensor.cpp
@@ -4,7 +4,7 @@
 
 #include <fstream>
 
-#include "gtest/gtest.h"
+#include <gtest/gtest.h>
 
 TEST(HwmonTempSensor, TestTMP75)
 {