Added lightless finder in dto of joining

LightlessSyncServer/LightlessSyncServer/Hubs/MareHub.Groups.cs

@@ -370,6 +370,7 @@ public partial class LightlessHub
             GroupGID = group.GID,
             GroupUserUID = UserUID,
             JoinedGroupOn = DateTime.UtcNow,
+            FromFinder = dto.Finder
         };
 
         var preferredPermissions = await DbContext.GroupPairPreferredPermissions.SingleOrDefaultAsync(u => u.UserUID == UserUID && u.GroupGID == group.GID, cancellationToken: _contextAccessor.HttpContext.RequestAborted).ConfigureAwait(false);
@@ -617,7 +618,6 @@ public partial class LightlessHub
         return new GroupJoinInfoDto(group.ToGroupData(), group.Owner.ToUserData(), group.ToEnum(), true);
     }
 
-
     [Authorize(Policy = "Identified")]
     public async Task GroupLeave(GroupDto dto)
     {