Implemented roles and action timestamps. Added oermissions selector and interfaces

Moonlight.Api/Database/DataContext.cs

@@ -9,6 +9,8 @@ public class DataContext : DbContext
 {
     public DbSet<User> Users { get; set; }
     public DbSet<SettingsOption> SettingsOptions { get; set; }
+    public DbSet<Role> Roles { get; set; }
+    public DbSet<RoleMember> RoleMembers { get; set; }
 
     private readonly IOptions<DatabaseOptions> Options;