feat: initial open-source release

Beeline - Open-source LLM observability and control platform

Features:
- Real-time agent monitoring dashboard
- LLM metrics and analytics (TimescaleDB)
- Cost tracking and budget controls
- WebSocket event streaming
- MCP (Model Context Protocol) server

Apache 2.0 License

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,54 @@
+---
+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. Go to '...'
+2. Click on '...'
+3. See error
+
+## Expected Behavior
+
+A clear and concise description of what you expected to happen.
+
+## Screenshots
+
+If applicable, add screenshots to help explain your problem.
+
+## Environment
+
+- OS: [e.g., Ubuntu 22.04, macOS 14]
+- Docker version: [e.g., 24.0.0]
+- Node version: [e.g., 20.10.0]
+- Browser (if applicable): [e.g., Chrome 120]
+
+## Configuration
+
+Relevant parts of your `config.yaml` (remove any sensitive data):
+
+```yaml
+# paste here
+```
+
+## Logs
+
+Relevant log output:
+
+```
+paste logs here
+```
+
+## Additional Context
+
+Add any other context about the problem here.