gitignore: add .idea and .ijwb

Change-Id: I5b2aedc26b0a4177d50a28bf791ead1677ea3f97
Reviewed-on: https://review.monogon.dev/c/monogon/+/31
Reviewed-by: Sergiusz Bazanski <serge@nexantic.com>
diff --git a/.gitignore b/.gitignore
index f03764d..e0ab998 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,4 @@
 bazel-*
 *swp
+.idea
+.ijwb