docs(issue_bug): add issue bugs template

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,43 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+---
+name: Issue template
+about: Describe this issue template's purpose here.
+
+---
+
+<!--
+Thanks for using coobjc!
+-->
+
+### Context and Description
+
+<!-- A description of the issue. -->
+
+### Environment Details
+
+* coobjc version:
+* iOS version:
+* Xcode version:
+* Other informations:
+
+### Expected behavior
+
+<!-- What do you think should happen? -->
+
+### Actual behavior
+
+<!-- What actually happens? -->
+
+### Steps to Reproduce
+
+### method call stacks
+
+<!-- when bugs happens-->