Custom sharing platform for links

Sometimes I would like to be able to make a share button for Telegram for example. Many platforms offer an easy solution to create a share button (e.g. Telegram: https://t.me/share/url?url={url}&text={text}).
So if we have the option to choose “custom platform” we could but together a share URL like the one from Telegram with dynamic inserter (like we already have for paragraphs).