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}}/schemas/__init__.py

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+from .health_check import PingResponse
+
+__all__ = [
+    "PingResponse",
+]

{{project_slug}}/schemas/health_check.py

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+"""Ping endpoint response is defined here."""
+
+from pydantic import BaseModel, Field
+
+
+class PingResponse(BaseModel):
+    """Ping response model, contains default message."""
+
+    message: str = Field(default="Pong!")