Update issue templates

Author: liydu

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve Azure RTOS.
+title: ''
+labels: bug
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+Please also mention any information which could help others to understand
+the problem you're facing:
+- What target device are you using?
+- Which version of Azure RTOS?
+- What toolchain and environment?
+- What have you tried to diagnose or workaround this issue?
+
+**To Reproduce**
+Steps to reproduce the behavior:
+1. Build my project in IAR Workbench.
+1. See error
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Impact**
+What impact does this issue have on your progress (e.g., annoyance, showstopper)
+
+**Logs and console output**
+If applicable, add console logs or other types of debug information like Wireshark capture as `.zip` file.
+
+**Additional context**
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea or enhancement to existing feature for Azure RTOS.
+title: ''
+labels: feature
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.

.github/ISSUE_TEMPLATE/hardware-or-architecture-support.md

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+---
+name: Hardware or architecture support
+about: Suggest adding hardware or new architecture support.
+title: ''
+labels: hardware
+assignees: ''
+
+---
+
+**Is this request related to a particular hardware platform, SoC, board? Please describe.**
+Describe in details the hardware support being requested and why this support benefits Azure RTOS.
+
+**Describe why you are asking for this support?**
+Describe why you are asking for this support.
+
+If this is a new board or SoC, please state whether you are willing to maintain the Azure RTOS support together with you.
+
+**Additional context**
+Add any other context or graphics (drag-and-drop an image) about the hardware here.