.gitignore: Adding additional ignored files

Adding some common IDE and build products
This keeps "git status" output clean
Also cleaning up empty line in file

Tested: Works as described, does not affect build
Signed-off-by: Josh Lehan <krellan@google.com>
Change-Id: Id7f329a03de5e859c91e3eb9a37e457aba346694
diff --git a/.gitignore b/.gitignore
index f8bd54a..bc7a194 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,7 +12,6 @@
 nlohmann-json/
 sdbusplus-project/
 sdbusplus-src/
-
 adcsensor
 cpusensor
 exitairtempsensor
@@ -22,3 +21,5 @@
 ipmbsensor
 mcutempsensor
 psusensor
+.idea/
+cmake-build-debug/