Add issue forms

.gitea/pull_request_template.md

@@ -0,0 +1,16 @@
+<!-- 
+    Thank you for your contribution! 🎉 
+
+    Please make sure that you:
+
+    - Use `git rebase` to bring your branch up to date, do not use a merge commit for that.
+
+    - Do not add translations by editing the language variants of strings.xml as that 
+      creates merge conflicts between Codeberg git repo and Weblate git repo,
+      use Weblate https://hosted.weblate.org/projects/freeyourgadget/gadgetbridge/
+
+    - Do not use `e.printStacktrace()`, use slf4j logger or `GB.toast` for logging
+      as per https://gadgetbridge.org/internals/development/project-overview/#logging
+    
+    You can erase this comment from PR description, thank you!
+-->