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

pyproject.toml

@@ -50,7 +50,8 @@ dependencies = [
     "click-completion>=0.5.2",
     "tabulate>=0.9.0",
     "colorama>=0.4.4",
-    "python-dotenv>=0.19.0"
+    "python-dotenv>=0.19.0",
+    "asyncpg (>=0.29.0)"
 ]
 classifiers = [
     "Development Status :: 4 - Beta",
@@ -93,3 +94,8 @@ include = ["aitbc_cli*"]
 
 [tool.setuptools.package-dir]
 "aitbc_cli" = "cli/aitbc_cli"
+
+[dependency-groups]
+dev = [
+    "mypy (>=1.19.1,<2.0.0)"
+]