Update issue templates

.github/ISSUE_TEMPLATE/bug-report.md

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+---
+name: Bug report
+about: Help us to improve this project
+
+---
+
+**Describe the bug(__must be provided__)**
+A clear and concise description of what the bug is.
+
+**Your Environments(__must be provided__)**
+  * OS: `uname -a`
+  * Compliler: `g++ --version` or `clang++ --version`
+  * CPU: `lscpu`
+
+**How To Reproduce(__must be provided__)**
+Steps to reproduce the behavior:
+  1. Step 1
+  2. Step 2
+  3. Step 3
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Additional context**
+Add any other context about the problem here.