rename Metric Classes and change Folder Structure

server/metrics/backends/Memory.py

@@ -0,0 +1,21 @@
+from server.metrics.backends.Template import StoreTemplate
+
+class MemoryMetricsStore(StoreTemplate):
+  def __init__(self, **kwargs):
+    super().__init__(backend="memory", **kwargs)
+    self._snapshots:dict[str, dict] = {}
+
+  async def publish(self, worker_id:str, snapshot:dict) -> None:
+    self._snapshots[worker_id] = dict(snapshot)
+
+  async def load_all(self) -> list[dict]:
+    return [dict(value) for value in self._snapshots.values()]
+
+  async def clear_all(self) -> None:
+    self._snapshots.clear()
+
+  async def _acquire_startup_cleanup_lock(self, lock_key:str, ttl_seconds:int=300) -> bool:
+    return True
+
+  async def close(self) -> None:
+    return None