Update issue templates

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,29 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: C-bug
+assignees: ''
+
+---
+
+**Describe the bug**
+
+**Input code**
+
+**Config**
+```json
+{
+    // Please copy and paste your .swcrc file here
+}
+```
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+
+**Version**
+The version of @swc/core: 
+
+**Additional context**
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/crash-report.md

@@ -0,0 +1,15 @@
+---
+name: Crash report
+about: Create a report to help us improve
+title: 'panic: '
+labels: C-bug
+assignees: ''
+
+---
+
+1. Source code
+
+2. `.swcrc` file
+
+3. Error message gained from `swc --sync <input.js>`
+(--sync is required to get panic message)