Add hook to add more information on player names

After the player name in the list of selected players in an event.

includes/admin/post-types/meta-boxes/class-sp-meta-box-event-performance.php

@@ -405,6 +405,7 @@ class SP_Meta_Box_Event_Performance {
 			<?php } ?>
 			<td>
 				<?php echo get_the_title( $player_id ); ?>
+				<?php do_action ( 'sportspress_event_selected_players' ); ?>
 				<?php if ( 1 == $section ) { ?>
 					<input type="hidden" name="sp_order[<?php echo $team_id; ?>][]" value="<?php echo $player_id; ?>">
 				<?php } ?>