60a30b9422
This commit introduces the ability to display stickers within message bubbles.
Key changes:
- `Attachments.kt`: Added handling for `AttachmentType.STICKER`. If an attachment type is unsupported, a placeholder text is now displayed.
- `Sticker.kt`: New composable created to render `VkStickerDomain` using `AsyncImage`.
- `MessageBubble.kt`:
- Adjusted background alpha for sticker messages to make the bubble transparent.
- Minor refactoring of `minDateContainerWidth` and `dateContainerWidth` initialization.
- `VkStickerDomain.kt`: Added `getUrl()` function to construct sticker image URLs, with options for specifying width and background.