Initial commit

This is a FastAPI backend microservice template used with `copier` utility.

Features of applied template are:
- Configuration file processing logic
- Metrics and tracing (both optional) configuration available
- Debug endpoints
- Database migration commands, prepared Alembic environment
- Database usage example in ping_db endpoint
- gitea sanity check pipeline

{{project_slug}}/exceptions/__init__.py.jinja

@@ -0,0 +1,5 @@
+from .base import {{ProjectName}}Error
+
+__all__ = [
+    "{{ProjectName}}Error",
+]