Add additional platform options in the Sharing feature

[aurelticot]

The Sharing feature allows to share either the profile URL or the DID.

On supported client, it will leverage the native Share feature of the device, providing a known experience for the user.

When the native Share is not available (mostly desktop clients), the Share feature fallbacks to a list of platforms such as Twitter, Telegram, ...

Some platforms were not included in the list because they had specific constraints. For instance, Facebook and LinkedIn require the content to be a URL, which is not the case for the DID.

We could have a simple way to handle these constraints and adapt the list depending on the type of content being shared.