Integrate backend sidecar process and external binaries into the Tauri build

backend/sidecar_main.py

@@ -0,0 +1,27 @@
+from __future__ import annotations
+
+import multiprocessing
+import os
+
+import uvicorn
+
+
+def main() -> None:
+    multiprocessing.freeze_support()
+    os.environ.setdefault("HEIMGEIST_BACKEND_SIDECAR", "1")
+    host = os.getenv("HEIMGEIST_BACKEND_HOST", "127.0.0.1")
+    port = int(os.getenv("HEIMGEIST_BACKEND_PORT", "8000"))
+    log_level = os.getenv("HEIMGEIST_BACKEND_LOG_LEVEL", "info")
+
+    uvicorn.run(
+        "backend.main:app",
+        host=host,
+        port=port,
+        log_level=log_level,
+        reload=False,
+        workers=1,
+    )
+
+
+if __name__ == "__main__":
+    main()