move route code out of server into own blueprints and cleanup the codebase

server/blueprints/metrics.py

@@ -0,0 +1,30 @@
+from quart import Blueprint, jsonify
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+  from server.Server import Server
+
+def create_metrics_blueprint(server:"Server") -> Blueprint:
+  blueprint = Blueprint("metrics", __name__)
+
+  @blueprint.get("/metrics")
+  async def metrics():
+    snapshot = await server.metrics_collector.build_snapshot(
+      server.game_last_seen_unix,
+      server.game_move_counts,
+    )
+    return jsonify(snapshot)
+
+  @blueprint.get("/metrics/prometheus")
+  async def metrics_prometheus():
+    snapshot = await server.metrics_collector.build_snapshot(
+      server.game_last_seen_unix,
+      server.game_move_counts,
+    )
+    return (
+      server.metrics_collector.build_prometheus_metrics(snapshot),
+      200,
+      {"Content-Type": "text/plain; version=0.0.4; charset=utf-8"},
+    )
+
+  return blueprint