Added SkinProvider to provide loaded Skins for loaded Players in a Replay

Uses SkinProvider in GuiPlayerOverview instead of requesting the Skin from the Mojang API

src/main/java/eu/crushedpixel/replaymod/utils/SkinProvider.java

@@ -0,0 +1,22 @@
+package eu.crushedpixel.replaymod.utils;
+
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.network.NetworkPlayerInfo;
+import net.minecraft.client.resources.DefaultPlayerSkin;
+import net.minecraft.util.ResourceLocation;
+
+import java.util.UUID;
+
+public class SkinProvider {
+
+    public static ResourceLocation getResourceLocationForPlayerUUID(UUID uuid) {
+        NetworkPlayerInfo info = Minecraft.getMinecraft().getNetHandler().getPlayerInfo(uuid);
+        ResourceLocation skinLocation;
+        if(info.hasLocationSkin()) {
+            skinLocation = info.getLocationSkin();
+        } else {
+            skinLocation = DefaultPlayerSkin.getDefaultSkin(uuid);
+        }
+        return skinLocation;
+    }
+}