Alter networking to include authorization bot header, and add initial sticker calls

lib/discord/structures/sticker.dart

@@ -110,3 +110,67 @@ class StickerItem {
         formatType: int.parse(js['format_type']));
   }
 }
+
+class StickerPack {
+  Snowflake id;
+  List<Sticker> stickers;
+  String name;
+  Snowflake sku_id;
+  Snowflake? coverStickerId;
+  String description;
+  Snowflake? bannerAssetId;
+
+  StickerPack(
+      {required this.id,
+      required this.stickers,
+      required this.name,
+      required this.sku_id,
+      this.coverStickerId,
+      required this.description,
+      this.bannerAssetId});
+
+  String encode() {
+    return json.encode(toJson());
+  }
+
+  Map<String, dynamic> toJson() {
+    List<Map<String, dynamic>> stickersJs = [];
+    for (Sticker sticker in stickers) {
+      stickersJs.add(sticker.toJson());
+    }
+
+    return {
+      "id": id.toString(),
+      "stickers": stickersJs,
+      "name": name,
+      "sku_id": sku_id.toString(),
+      if (coverStickerId != null) "cover_sticker_id": coverStickerId.toString(),
+      "description": description,
+      if (bannerAssetId != null) "banner_asset_id": bannerAssetId.toString()
+    };
+  }
+
+  factory StickerPack.fromJson(String js) {
+    return StickerPack.decode(json.decode(js));
+  }
+
+  factory StickerPack.decode(Map<String, dynamic> js) {
+    List<Sticker> jsStickers = [];
+    for (var entry in js['stickers']) {
+      jsStickers.add(Sticker.decode(entry));
+    }
+
+    return StickerPack(
+        id: Snowflake.parse(js['id'], Snowflake.DiscordEpoch),
+        stickers: jsStickers,
+        name: js['name'],
+        sku_id: Snowflake.parse(js['sku_id'], Snowflake.DiscordEpoch),
+        coverStickerId: js.containsKey("cover_sticker_id")
+            ? Snowflake.parse(js['cover_sticker_id'], Snowflake.DiscordEpoch)
+            : null,
+        description: js['description'],
+        bannerAssetId: js.containsKey("banner_asset_id")
+            ? Snowflake.parse(js['banner_asset_id'], Snowflake.DiscordEpoch)
+            : null);
+  }
+}