add issue template (nacos-group#433)

.github/ISSUE_TEMPLATE/bug.md

@@ -0,0 +1,21 @@
+---
+name: Bug Report
+about: Report a bug. 
+labels: 'Type: Bug'
+
+---
+
+### What version of nacos-sdk-go are you using?
+
+### What version of nacos-sever are you using?
+
+### What version of Go are you using (`go version`)?
+
+### What operating system (Linux, Windows, …) and version?
+
+### What did you do?
+If possible, provide a recipe for reproducing the error.
+
+### What did you expect to see?
+
+### What did you see instead?

.github/ISSUE_TEMPLATE/feature.md

@@ -0,0 +1,14 @@
+---
+name: Feature Request
+about: Suggest an idea for nacos-sdk-go
+labels: 'Type: Feature'
+
+---
+
+### Use case(s) - what problem will this feature solve?
+
+### Proposed Solution
+
+### Alternatives Considered
+
+### Additional Context

.github/ISSUE_TEMPLATE/question.md

@@ -0,0 +1,7 @@
+---
+name: Question
+about: Ask a question about nacos-sdk-go
+labels: 'Type: Question'
+
+---
+