Add issue configuration file

Added a configuration file to enable blank issues and direct questions to GitHub Discussions.

Author: miltonials

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,5 @@
+blank_issues_enabled: true
+contact_links:
+  - name: "Questions about OSMTracker"
+    url: "https://github.com/labexp/osmtracker-android/discussions/categories/q-a"
+    about: "Ask questions and discuss with the OSMTracker community in GitHub Discussions."