chore: import upstream snapshot with attribution

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,26 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+#### Expected Behavior
+<!--- Required. Describe the behavior you expect to see for your case. -->
+
+#### Actual Behavior
+<!--- Required. Describe the actual behavior for your case. -->
+
+#### Potential Solution
+<!--- Optional. Describe any potential solutions and/or thoughts as to what may be causing the difference between expected and actual behavior. -->
+
+#### Checklist
+<!--- Confirm that you've provided all the required information. -->
+<!--- Required fields --->
+- [ ] I have completely filled out this template
+- [ ] I have confirmed that this issue exists on the current `master` branch
+- [ ] I have confirmed that this is not a duplicate issue by searching [issues](https://github.com/QuantConnect/Lean/issues)
+
+<!--- Template inspired by https://github.com/stevemao/github-issue-templates -->