Create feature_request.md

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: feature request
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.(Optional)**
+<!--A clear and concise description of what the problem is. -->
+
+**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.-->