Version 0.2.0

Changes:
- add metrics dispencer
- add basic authentication dependency
- enable GZIP middleware
- add !env() example to deploy section
- update dependencies state attribute name

{{project_slug}}/dependencies/metrics_dep.py.jinja

@@ -0,0 +1,26 @@
+"""Metrics dependency functions are defined here."""
+
+from fastapi import FastAPI, Request
+
+from {{project_slug}}.observability.metrics import Metrics
+
+
+def init_dispencer(app: FastAPI, connection_manager: Metrics) -> None:
+    """Initialize Metrics dispencer at app's state."""
+    if hasattr(app.state, "metrics_dep"):
+        if not isinstance(app.state.metrics_dep, Metrics):
+            raise ValueError(
+                "metrics_dep attribute of app's state is already set" f"with other value ({app.state.metrics_dep})"
+            )
+        return
+
+    app.state.metrics_dep = connection_manager
+
+
+def obtain(app_or_request: FastAPI | Request) -> Metrics:
+    """Get a Metrics from request's app state."""
+    if isinstance(app_or_request, Request):
+        app_or_request = app_or_request.app
+    if not hasattr(app_or_request.state, "metrics_dep"):
+        raise ValueError("Metrics dispencer was not initialized at app preparation")
+    return app_or_request.state.metrics_dep