add getAdvancementProgress() to PlayerAdvancementCriterionGrantEvent (#9865)

this allows for simpler checks for if an advancement would be given to a player,
and denying it (as the advancement grant event is non-cancelable)

patches/api/0085-Add-PlayerAdvancementCriterionGrantEvent.patch

@@ -1,18 +1,20 @@
 From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
 From: BillyGalbreath <Blake.Galbreath@GMail.com>
 Date: Fri, 19 Jan 2018 08:15:14 -0600
-Subject: [PATCH] PlayerAdvancementCriterionGrantEvent
+Subject: [PATCH] Add PlayerAdvancementCriterionGrantEvent
 
+Co-authored-by: The456gamer <the456gamer@the456gamer.dev>
 
 diff --git a/src/main/java/com/destroystokyo/paper/event/player/PlayerAdvancementCriterionGrantEvent.java b/src/main/java/com/destroystokyo/paper/event/player/PlayerAdvancementCriterionGrantEvent.java
 new file mode 100644
-index 0000000000000000000000000000000000000000..bb8d7c959cdea4b66455a49e74804ea4b126620d
+index 0000000000000000000000000000000000000000..9e43739404814781ede832ec5931cd2d963fff19
 --- /dev/null
 +++ b/src/main/java/com/destroystokyo/paper/event/player/PlayerAdvancementCriterionGrantEvent.java
-@@ -0,0 +1,63 @@
+@@ -0,0 +1,78 @@
 +package com.destroystokyo.paper.event.player;
 +
 +import org.bukkit.advancement.Advancement;
++import org.bukkit.advancement.AdvancementProgress;
 +import org.bukkit.entity.Player;
 +import org.bukkit.event.Cancellable;
 +import org.bukkit.event.HandlerList;
@@ -20,18 +22,21 @@ index 0000000000000000000000000000000000000000..bb8d7c959cdea4b66455a49e74804ea4
 +import org.jetbrains.annotations.NotNull;
 +
 +/**
-+ * Called when a player is granted a criteria in an advancement.
++ * Called after a player is granted a criteria in an advancement.
++ * If cancelled the criteria will be revoked.
 + */
 +public class PlayerAdvancementCriterionGrantEvent extends PlayerEvent implements Cancellable {
 +    private static final HandlerList handlers = new HandlerList();
 +    @NotNull private final Advancement advancement;
 +    @NotNull private final String criterion;
++    @NotNull private final AdvancementProgress advancementProgress;
 +    private boolean cancel = false;
 +
 +    public PlayerAdvancementCriterionGrantEvent(@NotNull Player who, @NotNull Advancement advancement, @NotNull String criterion) {
 +        super(who);
 +        this.advancement = advancement;
 +        this.criterion = criterion;
++        this.advancementProgress = who.getAdvancementProgress(advancement);
 +    }
 +
 +    /**
@@ -58,6 +63,17 @@ index 0000000000000000000000000000000000000000..bb8d7c959cdea4b66455a49e74804ea4
 +        return cancel;
 +    }
 +
++    /**
++     * Gets the current AdvancementProgress.
++     * See {@link PlayerAdvancementCriterionGrantEvent}
++     *
++     * @return advancement progress
++     */
++    @NotNull
++    public AdvancementProgress getAdvancementProgress() {
++        return advancementProgress;
++    }
++
 +    public void setCancelled(boolean cancel) {
 +        this.cancel = cancel;
 +    }

patches/server/0174-Add-PlayerAdvancementCriterionGrantEvent.patch

@@ -1,7 +1,7 @@
 From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
 From: BillyGalbreath <Blake.Galbreath@GMail.com>
 Date: Fri, 19 Jan 2018 08:15:29 -0600
-Subject: [PATCH] PlayerAdvancementCriterionGrantEvent
+Subject: [PATCH] Add PlayerAdvancementCriterionGrantEvent
 
 
 diff --git a/src/main/java/net/minecraft/server/PlayerAdvancements.java b/src/main/java/net/minecraft/server/PlayerAdvancements.java