chore(.github): add feature request template (#382)

Signed-off-by: KeisukeYamashita <[email protected]>

Author: KeisukeYamashita

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,28 @@
+---
+name: Feature Request
+about: Create a report to help us improve
+title: ''
+labels: enhancement
+assignees: ''
+
+---
+
+**Describe the feature**
+
+A clear and concise description the feature request.
+
+## How to run
+
+If you plan to add a new command, flag or option, please describe how you would like to run it.
+
+```console
+
+```
+
+## Expected behavior
+
+A clear and concise description of what you expected to happen.
+
+## Additional context
+
+Add any other context about the problem here.