Refactor avatar skilldepot and constellation/talent changing

Ensures Traveler retains talent levels and constellations on inactive elements when switching elements.
Relevant for any other skillDepot-changing activities like Windtrace too, though keeping those in the db might not be as useful.

Refactor avatar talent upgrade and access
Refactor skillExtraCharges

src/main/java/emu/grasscutter/data/excels/AvatarSkillDepotData.java

@@ -1,6 +1,7 @@
 package emu.grasscutter.data.excels;
 
 import java.util.List;
+import java.util.stream.IntStream;
 
 import emu.grasscutter.data.GameData;
 import emu.grasscutter.data.GameDepot;
@@ -71,4 +72,9 @@ public class AvatarSkillDepotData extends GameResource {
         @Getter private int proudSkillGroupId;
         @Getter private int needAvatarPromoteLevel;
     }
+
+    public IntStream getSkillsAndEnergySkill() {
+        return IntStream.concat(this.skills.stream().mapToInt(i -> i), IntStream.of(this.energySkill))
+                        .filter(skillId -> skillId > 0);
+    }
 }