Update issue templates

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,39 @@
+---
+name: Bug report
+about: Report something wrong in this library
+title: ''
+labels: bug
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+1. Go Version: 
+2. GoMC Version: 
+3. Code:
+
+```go
+package main
+
+// import "github.com/Tnze/go-mc/xxxxx"
+
+func main() {
+
+}
+```
+
+**Expected output**
+A clear and concise description of what you expected to happen.
+
+```
+THE OUTPUT OF PREVIOUS CODE
+```
+
+**Current output**
+If applicable, add screenshots to help explain your problem.
+
+**Additional context**
+Add any other context about the problem here.