Add issue template

.gitlab/issue_templates/bug.md

@@ -0,0 +1,28 @@
+## Your Environment
+
+Thank you for taking the time to report an issue.
+
+To more efficiently resolve this issue, we'd like to know some basic information about your system and setup.
+
+1) Your operating system:
+
+2) Version of python you are running (`python --version`):
+
+3) How did you install rosbags? Did you use pip to install from PyPI or a repository checkout or something else?
+
+4) Version of rosbags you have installed (`pip show rosbags | grep Version`):
+
+
+If you're having issues with (de)serialization of custom message types please include a copy of the following:
+* Message definition files (msg or idl)
+* The bytes of an example message
+
+
+## The Issue
+
+Please describe the issue that you are experiencing.
+
+
+## Steps to Reproduce
+
+If the issue is predictable and consistently reproducible, please list the steps here.