Disable blank issues

Encourage filling out the bug report template when filing bug reports, and add link to forums for questions

Author: will-v-pi

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,5 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Raspberry Pi Pico Forums
+    url: https://forums.raspberrypi.com/viewforum.php?f=143
+    about: Please ask and answer questions here.