Make PAPI expansion persist through PAPI reloads

There's a comment in PAPIs code, suggesting that every "INTERNAL" expansion (like this one) should use this.

Strangely, despite the expansion class (me.clip.placeholderapi.expansion) assuming an extension is internal if not specified otherwise, the default behaviour is still non-persistent for some reason.

src/main/java/com/dre/brewery/integration/papi/PlaceholderAPIManager.java

@@ -61,6 +61,11 @@ public PlaceholderAPIManager() {
 		return plugin.getDescription().getVersion();
 	}
 
+	@Override
+	public boolean persist() {
+		return true;
+	}
+
 	@Override
 	public String onRequest(OfflinePlayer player, @NotNull String params) {
 		BPlayer bPlayer = BPlayer.get(player);