governance: new issue templates (#1048)

Co-authored-by: Björn Brauer <bjoern.brauer@new-work.se>
Co-authored-by: ChristopherHX <christopher.homberger@web.de>

Co-authored-by: Björn Brauer <bjoern.brauer@new-work.se>
Co-authored-by: ChristopherHX <christopher.homberger@web.de>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

.github/ISSUE_TEMPLATE/config.yml

@@ -1,5 +1,8 @@
 blank_issues_enabled: true
 contact_links:
+  - name: Start a discussion
+    url: https://github.com/nektos/act/discussions/new
+    about: You can ask for help here!
   - name: Ask on Gitter
     url: https://gitter.im/nektos/act
     about: You can ask for help here!