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/base.py.jinja

@@ -0,0 +1,10 @@
+"""Base application exception class is defined here."""
+
+
+class {{ProjectName}}Error(RuntimeError):
+    """
+    Base application exception to inherit from.
+    """
+
+    def __str__(self) -> str:
+        return "Unexpected error happened in {{project_name}}"