fix(async): convert PoA proposer methods to async and update coordinator dependencies

- Convert _propose_block, _ensure_genesis_block to async methods in PoAProposer
- Add await to gossip_broker.publish calls in block broadcasting
- Add await to _ensure_genesis_block and _propose_block method calls
- Update coordinator-api Python version constraint to >=3.13,<3.15
- Add torch ^2.10.0 dependency to coordinator-api
- Add make_asgi_app import to prometheus_client in main.py
- Export new routers: global

apps/coordinator-api/src/app/main.py

@@ -5,7 +5,7 @@ from fastapi import FastAPI, Request
 from fastapi.middleware.cors import CORSMiddleware
 from fastapi.responses import JSONResponse, Response
 from fastapi.exceptions import RequestValidationError
-from prometheus_client import Counter, Histogram, generate_latest
+from prometheus_client import Counter, Histogram, generate_latest, make_asgi_app
 from prometheus_client.core import CollectorRegistry
 from prometheus_client.exposition import CONTENT_TYPE_LATEST