For extensions of base system like podman and btrfs: Started improving server abstractions to make it more extendable in order to support multiple implementations

MoonlightServers.Daemon/ServerSys/Abstractions/IStatistics.cs

@@ -0,0 +1,11 @@
+namespace MoonlightServers.Daemon.ServerSys.Abstractions;
+
+public interface IStatistics : IServerComponent
+{
+    public IAsyncObservable<ServerStats> Stats { get; }
+    
+    public Task SubscribeToRuntime();
+    public Task SubscribeToInstallation();
+
+    public ServerStats[] GetStats(int count);
+}