add checkboxes to issue template

.github/ISSUE_TEMPLATE/BUG_REPORT.yml

@@ -9,6 +9,22 @@ body:
         Found a bug? Please fill out the sections below. 👍
         Thanks for taking the time to fill out this bug report!
         For backend issues, use [lemmy](https://github.com/LemmyNet/lemmy)
+  - type: checkboxes
+    attributes:
+      label: Requirements
+      description: Before you create a bug report please do the following.
+      options:
+        - label: Did you check to see if this issue already exists?
+          required: true
+      options:
+        - label: Is this only a single bug. Do not put multiple bugs in one issue.
+          required: true
+      options:
+        - label: Is this a question or discussion? Don't use this, use https://lemmy.ml/c/lemmy_support
+          required: true
+      options:
+        - label: Is this a server side (not related to the UI) issue? Use the [Lemmy back end](https://github.com/LemmyNet/lemmy) repo.
+          required: true
   - type: textarea
     id: summary
     attributes: