Add intellij file types to .gitignore

Issue-ID: POLICY-1264
Change-Id: I06369ecb1837f0c080ff2a47c502f4b0d5e5e51b
Signed-off-by: liamfallon <liam.fallon@est.tech>
diff --git a/.gitignore b/.gitignore
index e0c495f..8daeb28 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,3 +11,6 @@
 .idea
 logs/
 debug-logs/
+*.iml
+*.ipr
+*.iws