Added database entities, started with node crud

MoonlightServers.ApiServer/Database/Entities/Server.cs

@@ -0,0 +1,26 @@
+namespace MoonlightServers.ApiServer.Database.Entities;
+
+public class Server
+{
+    public int Id { get; set; }
+
+    public string Name { get; set; }
+
+    public int Cpu { get; set; }
+    public int Memory { get; set; }
+    public int Disk { get; set; }
+
+    public string? OverrideStartupCommand { get; set; } = null;
+    public string? OverrideDockerImage { get; set; } = null;
+    
+    public bool VirtualDiskEnabled { get; set; } = false;
+
+    public Star Star { get; set; }
+    public int DockerImageIndex { get; set; } = 0;
+
+    public Node Node { get; set; }
+    public Network? Network { get; set; }
+    public List<Allocation> Allocations { get; set; } = new();
+    public List<ServerVariable> Variables { get; set; } = new();
+    public List<Backup> Backups { get; set; } = new();
+}