Fix gradle run

server/build.gradle

@@ -3,6 +3,11 @@
  */
 
 plugins {
+    id 'application'
     id 'fr.lnl.game.java-library-conventions'
 }
 
+application {
+    mainClassName = 'fr.lnl.game.server.games.grid.Grid'
+}
+

server/src/main/java/fr/lnl/game/server/games/grid/Grid.java

@@ -15,7 +15,7 @@ public class Grid {
     public Grid(int x, int y){
         this.x = x;
         this.y = y;
-        board = new HashMap<Point<Integer, Integer>, Triplet<Box, Box, Box>>();
+        board = new HashMap<>();
     }
 
     public void initGrid(){