Organize project tracking on Gitea (#13)

.gitea/issue_template/bug.md

@@ -0,0 +1,27 @@
+---
+name: Bug report
+about: Incorrect behavior or a regression in Rivencraft
+title: ""
+labels: type/bug
+assignees: ""
+---
+
+## Observed behavior
+
+Describe what happened, including the dimension, book type, preview mode, and
+installed optional mods when relevant.
+
+## Expected behavior
+
+Describe what should have happened.
+
+## Reproduction
+
+1. List the minimum steps needed to reproduce the problem.
+2. Include the Rivencraft, NeoForge, and optional-mod versions.
+3. Attach the relevant log or crash report.
+
+## Acceptance criteria
+
+- [ ] The reproduction no longer fails.
+- [ ] A focused regression check covers the corrected behavior when practical.