Added assets and lang keys for sticker creation menu.

Telegram/Resources/langs/lang.strings

@@ -4507,6 +4507,23 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_stickers_box_edit_name_about" = "Choose a name for your set.";
 "lng_stickers_creator_badge" = "edit";
 
+"lng_stickers_create_new" = "Create a New Sticker";
+"lng_stickers_add_existing" = "Add an Existing Sticker";
+"lng_stickers_pick_existing_title" = "Choose Sticker";
+"lng_stickers_pick_existing_about" = "Pick a sticker from your library to add it to this set.";
+"lng_stickers_pick_existing_empty" = "You don't have any stickers yet.";
+"lng_stickers_create_image_title" = "New Sticker";
+"lng_stickers_create_image_about" = "Choose an image to add as a sticker.";
+"lng_stickers_create_choose_image" = "Choose Image";
+"lng_stickers_create_image_filter" = "Images";
+"lng_stickers_create_open_failed" = "Could not load image.";
+"lng_stickers_create_too_small" = "The image must be at least {size} pixels on each side.";
+"lng_stickers_create_choose_emoji" = "Choose an emoji that corresponds to your sticker:";
+"lng_stickers_create_emoji_required" = "Please choose an emoji.";
+"lng_stickers_create_uploading" = "Uploading sticker…";
+"lng_stickers_create_upload_failed" = "Sticker upload failed. Please try again.";
+"lng_stickers_create_added" = "Sticker added.";
+
 "lng_in_dlg_photo" = "Photo";
 "lng_in_dlg_album" = "Album";
 "lng_in_dlg_video" = "Video";

Telegram/SourceFiles/chat_helpers/chat_helpers.style

@@ -424,6 +424,10 @@ stickersScroll: ScrollArea(boxScroll) {
 stickersRowDisabledOpacity: 0.4;
 stickersRowDuration: 200;
 
+stickersAddCellPlusSize: 22px;
+stickersAddCellPlusThickness: 2px;
+stickersAddCellBgRadius: 28px;
+
 emojiStatusDefault: icon {{ "emoji/stickers_premium", emojiIconFg }};
 
 filtersRemove: IconButton(stickersRemove) {

Telegram/SourceFiles/ui/menu_icons.style

@@ -191,6 +191,8 @@ menuIconOrderPrice: icon {{ "menu/order_price", menuIconColor }};
 menuIconOrderDate: icon {{ "menu/order_date", menuIconColor }};
 menuIconOrderNumber: icon {{ "menu/order_number", menuIconColor }};
 menuIconAdd: icon {{ "menu/add", menuIconColor }};
+menuIconStickerCreate: icon {{ "menu/sticker_add", menuIconColor }};
+menuIconStickerAdd: icon {{ "menu/sticker_select", menuIconColor }};
 menuIconRatingGifts: icon {{ "menu/rating_gifts-24x24", menuIconColor }};
 menuIconRatingUsers: icon {{ "menu/users_stars-24x24", menuIconColor }};
 menuIconRatingRefund: icon {{ "menu/rating_refund-24x24", menuIconColor }};