[ci-skip] Add better issue templates (#360)

Co-authored-by: Ben Kerllenevich <me@notom3ga.me>

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,35 @@
+---
+name: Feature Request
+about: Suggest an idea for Purpur
+---
+
+<!--
+  Thank you for filling out a feature request for Purpur! Please be as detailed as possible so that we may consider and review the request easier.
+  We ask that you search all the issues to avoid a duplicate feature request. If one exists, please reply if you have anything to add.
+  Before requesting a new feature, please make sure you are using the latest version and that the feature you are requesting is not already in Purpur.
+-->
+
+## Is your feature request related to a problem?
+<!--
+  Please give some context for this request. Why do you want it added?
+-->
+
+## Describe the solution you'd like.
+<!--
+  A clear and concise description of what you want.
+-->
+
+## Describe alternatives you've considered.
+<!--
+  List any alternatives you might have tried to get the feature you want.
+-->
+
+## Agreements
+Please agree to the following.
+- [ ] I have searched for and ensured there isn't already an open issue regarding this.
+- [ ] I have ensured the feature I'm requesting isn't already in the latest supported Purpur build.
+
+## Other
+<!--
+  Add any other context or screenshots about the feature request below.
+-->