add issue templates

.github/ISSUE_TEMPLATE/bug.md

@@ -0,0 +1,40 @@
+---
+name: 🐞 Bug
+about: File a bug/issue
+title: '[BUG] <title>'
+labels: bug, triage
+assignees: ''
+
+---
+
+<!--
+Note: Please search to see if an issue already exists for the bug you encountered.
+-->
+
+### Current Behavior:
+<!-- A concise description of what you're experiencing. -->
+
+### Expected Behavior:
+<!-- A concise description of what you expected to happen. -->
+
+### Steps To Reproduce:
+<!--
+Example: steps to reproduce the behavior:
+1. In this environment...
+1. With this config...
+1. Run '...'
+1. See error...
+-->
+
+### Environment:
+<!--
+Example:
+- SUNDIALS version: 7.0.0
+- OS: Ubuntu 20.04
+- Compiler: gcc 8.5.0
+-->
+
+### Anything else:
+<!--
+Links? References? Anything that will give us more context about the issue that you are encountering!
+-->

.github/ISSUE_TEMPLATE/general.md

@@ -0,0 +1,8 @@
+---
+name: General/Question
+about: File a issue for something that is not a bug
+title: '<title>'
+labels: triage
+assignees: ''
+
+---