feat: add sendDice configs

Add sendDice config to use in Send method
as a Chattable interface.
Add NewDice and NewDiceWithEmoji helpers
Add tests

https://core.telegram.org/bots/api#senddice

types.go

@@ -352,6 +352,7 @@ type Sticker struct {
 	IsAnimated   bool       `json:"is_animated"` // optional
 }
 
+// StickerSet contains information about an sticker set.
 type StickerSet struct {
 	Name          string    `json:"name"`
 	Title         string    `json:"title"`