.gitignore: Adding additional ignored files

Adding some common IDE and build products
This keeps "git status" output clean

Tested: Works as described, does not affect build

Signed-off-by: Josh Lehan <krellan@google.com>
Change-Id: I22a9933fd6b5c0f5068174052a477b802086307a
diff --git a/.gitignore b/.gitignore
index f42be22..03a2204 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,3 +18,8 @@
 compile_commands.json
 entity-manager
 fru-device
+CTestTestfile.cmake
+_3rdParty/
+entityManagerTests
+.idea/
+cmake-build-debug/