Provide issue templates for features and questions

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Enabling something that is not yet possible
+labels: enhancement
+title: ''
+assignees: ''
+
+---
+
+<!-- Please fill out the relevant sections below, and delete all that do not apply: -->
+
+I would like to be able ...
+
+My specific use case for this functionality is ...
+
+This is more generally applicable to ...
+
+## Draft
+
+<!-- Can you show a possible way to provide this functionality? Consider that a good
+draft drastically reduces mental overhead, gives context, and overall makes it
+much more likely to be implemented. The draft does not need to be an actual
+implementation but should provide a starting point for discussion. -->
+

.github/ISSUE_TEMPLATE/question.md

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+---
+name: Question
+about: Unsure how to get something to work
+labels: question
+title: ''
+assignees: ''
+
+---
+
+How does one ... ?
+<!-- Describe the actual operation you are looking for, and think exists. If
+you know it doesn't then please use the feature request template instead -->
+
+Overall, I'm trying to achieve ...
+<!-- Consider alternative solutions. But importantly, don't feel afraid to ask
+for ergonomic ways to achieve your means if you do not find any. -->