Moved share permission parsing to jsonb implementation of ef core. Improved auth handling for shares

MoonlightServers.ApiServer/Database/Entities/ServerShare.cs

@@ -1,4 +1,5 @@
 using System.ComponentModel.DataAnnotations.Schema;
+using MoonlightServers.ApiServer.Models;
 
 namespace MoonlightServers.ApiServer.Database.Entities;
 
@@ -9,8 +10,7 @@ public class ServerShare
     public int UserId { get; set; }
     public Server Server { get; set; }
 
-    [Column(TypeName = "jsonb")]
-    public string Permissions { get; set; }
+    public ServerShareContent Content { get; set; } = new();
 
     [Column(TypeName="timestamp with time zone")]
     public DateTime CreatedAt { get; set; }