Telegram mini app support

[upalinski]

Now, Cere Wallet SDK can be used inside telegram mini apps to connect Cere Wallet implicitly.

There is no popups or any other kind of screens user sees. Everything happens in the background.

The Telegram's signed 'initData' that is available in Mini App context is used to do a secure 'handshake' with a Cere Wallet API and generate idToken that later is used to call web3auth to retrieve (or create a new) wallet.

Now Mini Apps can use Cere Wallet to sign their requests to DDC or send signed events via Activity SDK.

To use Cere Wallet SDK inside Mini App, a new parameter should be passed in 'init' method:

authMethod: { type: 'telegram-mini-app', token: `${TELEGRAM_BOT_ID}:${initDataRaw}` }