Links for the "New Issue" page

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,17 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Marlin Documentation
+    url: http://marlinfw.org/
+    about: Lots of documentation on installing and using Marlin.
+  - name: MarlinFirmware Facebook group
+    url: https://www.facebook.com/groups/1049718498464482
+    about: Please ask and answer questions here.
+  - name: Marlin on Discord
+    url: https://discord.gg/n5NJ59y
+    about: Join the Discord server for support and discussion.
+  - name: Marlin Discussion Forum
+    url: http://forums.reprap.org/list.php?415
+    about: A searchable web forum hosted by RepRap dot org.
+  - name: Marlin Videos on YouTube
+    url: https://www.youtube.com/results?search_query=marlin+firmware
+    about: Tutorials and more from Marlin users all around the world. Great for new users!