Include blurb in issue template to hopefully help people find existing reports

.github/ISSUE_TEMPLATE/01-bug-issues.md

@@ -1,7 +1,18 @@
 ---
 name: Bug Report
-about: Issues regarding encountered bugs.
+about: Report a bug or crash to desktop
 ---
+
+<!--
+IMPORTANT: Your issue may already be reported.
+
+Please check:
+- Pinned issues, at the top of https://github.com/ppy/osu/issues
+- Current priority 0 issues at https://github.com/ppy/osu/issues?q=is%3Aissue+is%3Aopen+sort%3Aupdated-desc+label%3Apriority%3A0
+- Search for your issue. If you find that it already exists, please respond with a reaction or add any further information that may be helpful.
+-->
+
+
 **Describe the bug:** 
 
 **Screenshots or videos showing encountered issue:** 
@@ -9,6 +20,7 @@ about: Issues regarding encountered bugs.
 **osu!lazer version:** 
 
 **Logs:**
+
 <!--
 *please attach logs here, which are located at:*
 - `%AppData%/osu/logs` *(on Windows),*