refactor: consolidate logging to shared aitbc-core package and upgrade database dependencies

- Upgrade SQLAlchemy to 2.0.47 with asyncio extras in blockchain-node and coordinator-api
- Add asyncpg >=0.29.0 for PostgreSQL async support
- Remove uvloop as optional dependency, make it required >=0.22.0
- Delete duplicate logger.py from blockchain-node (117 lines)
- Refactor coordinator-api logging to use shared aitbc.logging from aitbc-core package
- Add aitbc-core package dependency to coordinator

apps/coordinator-api/pyproject.toml

@@ -13,7 +13,7 @@ fastapi = "^0.111.0"
 uvicorn = { extras = ["standard"], version = "^0.30.0" }
 pydantic = "^2.7.0"
 pydantic-settings = "^2.2.1"
-sqlalchemy = "^2.0.30"
+sqlalchemy = {extras = ["asyncio"], version = "^2.0.47"}
 aiosqlite = "^0.20.0"
 sqlmodel = "^0.0.16"
 httpx = "^0.27.0"
@@ -23,6 +23,8 @@ orjson = "^3.10.0"
 gunicorn = "^22.0.0"
 prometheus-client = "^0.19.0"
 aitbc-crypto = {path = "../../packages/py/aitbc-crypto"}
+asyncpg = ">=0.29.0"
+aitbc-core = {path = "../../packages/py/aitbc-core"}
 
 [tool.poetry.group.dev.dependencies]
 pytest = "^8.2.0"