Update issue templates (#62)

.github/ISSUE_TEMPLATE/bug-performance-issue.md

@@ -0,0 +1,29 @@
+---
+name: Bug/Performance issue
+about: Use this template for reporting a bug or a performance issue.
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**System information**
+- OS Platform and Distribution (e.g., Linux Ubuntu 16.04):
+- ONNX Runtime installed from (source or binary):
+- ONNX Runtime version:
+- Python version:
+- GCC/Compiler version (if compiling from source):
+- CUDA/cuDNN version:
+- GPU model and memory:
+
+**To Reproduce**
+Describe steps/code to reproduce the behavior:
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Additional context**
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Use this template for raising a feature request.
+
+---
+
+**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 [...]
+
+**System information**
+- ONNX Runtime version (you are using):
+
+**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.