Update issue templates

Author: brendan-kellam

.github/ISSUE_TEMPLATE/blank-issue.md

@@ -0,0 +1,10 @@
+---
+name: Blank issue
+about: Create a new issue from scratch
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,20 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: "[bug] "
+labels: bug, triage needed
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is, as well as what you expected to happen when encountering it.
+
+**To Reproduce**
+Describe how to reproduce your bug.
+
+**Additional Info (please complete the following information):**
+ - Sourcebot version: [e.g., v3.0.1]
+ 
+**Additional context**
+Add any other context about the problem here.