feat: add Docker support and database migrations

- Created Dockerfile for building and running the application with Uvicorn.
- Added docker-compose.yml to manage application and PostgreSQL service.
- Introduced Alembic migrations with initial schema for CRM domain objects.
- Configured async SQLAlchemy engine for migrations.
- Updated dependencies in uv.lock to include asyncpg, passlib, and pyjwt.

.dockerignore

@@ -0,0 +1,21 @@
+# Ignore everything by default
+*
+
+# Allow docker metadata
+!.dockerignore
+
+# Allow application sources and dependency manifests
+!app/
+!pyproject.toml
+!uv.lock
+
+# Allow runtime entrypoint if needed
+!main.py
+
+# Allow Alembic configuration and migrations when needed for containers
+!alembic.ini
+!migrations/
+
+# Allow environment template/documentation
+!.env
+!README.md