build: github acik kaynak hazirligi — LICENSE/CI/topluluk dosyalari eklendi, binary'ler takipten cikarildi, README EN, kok dokumanlar docs/'a tasindi

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,30 @@
+---
+name: Bug report
+about: Report a bug to help us improve
+title: "[Bug] "
+labels: bug
+assignees: ''
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To reproduce**
+Steps to reproduce the behavior:
+1. Open '...'
+2. Click on '...'
+3. See error
+
+**Expected behavior**
+What you expected to happen.
+
+**Screenshots / screen recording**
+If applicable, add screenshots to help explain your problem.
+
+**Environment**
+- OS / distro: [e.g. Ubuntu 24.04, Windows 11]
+- imajViewer version: [e.g. 1.1.0 — from `pubspec.yaml` or release name]
+- Desktop environment / GPU: [e.g. XFCE + llvmpipe, or NVIDIA driver]
+
+**Additional context**
+Anything else relevant (log output, image that triggers the bug, etc.)