docs: add issue templates

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,33 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Environments**
+Your operating system, such as `Mac OS Catalina 10.15.7`.
+
+**RevSuit Version**
+Versions of RevSuit with bugs.
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behavior:
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Additional context**
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,17 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Describe the new feature you expect to add**
+A clear and concise description.
+
+**Why do you want to add this feature**
+A clear and concise description of why you need the feature, such as in what kind of usage scenarios it would be more convenient to have a certain feature.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.