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

deploy/configs/api.yaml.jinja

@@ -0,0 +1,27 @@
+app:
+  host: 0.0.0.0
+  port: 8080
+  debug: true
+  cors:
+    allow_origins: ["*"]
+    allow_methods: ["*"]
+    allow_headers: ["*"]
+    allow_credentials: True
+db:
+  master:
+    host: {{project_slug}}_db
+    port: 5432
+    database: {{project_slug}}_db
+    user: postgres
+    password: postgres
+    pool_size: 2
+logging:
+  level: INFO
+observability:
+  prometheus:
+    host: 0.0.0.0
+    port: 9090
+    urls_mapping:
+      /api/debug/.*: /api/debug/*
+  jaeger:
+    endpoint: http://otel:4318/v1/traces