Initial commit: Revids REST API for LTX-2.3 image-to-video generation

- FastAPI with job polling: POST /generate, GET /jobs/{id}, /download, /health
- SQLite job persistence (aiosqlite), background task processing
- LTX-2.3 DistilledPipeline via native ltx-pipelines (editable install from submodule)
- Configurable model paths, LoRA support, FP8 quantization via env vars
- Single-concurrency GPU lock for safe inference
- LTX-2 as git submodule under libs/

.gitignore

@@ -0,0 +1,34 @@
+# Python
+__pycache__/
+*.py[cod]
+*.egg-info/
+dist/
+build/
+*.egg
+.eggs/
+
+# Virtual env
+.venv/
+venv/
+
+# Environment
+.env
+.env.*
+
+# IDE
+.vscode/
+.idea/
+
+# OS
+.DS_Store
+
+# Models & outputs
+models/
+videos/
+*.safetensors
+
+# Database
+app/jobs.db
+
+# LTX-2 submodule deps (uv creates this)
+libs/LTX-2/.venv/