Add new smart contract tutorial on features unlocked by HIP-1215

[kpachhai]

Problem

Currently, we have a tutorial on how to schedule your transaction in the future using the SDK: https://docs.hedera.com/hedera/tutorials/more-tutorials/schedule-your-first-transaction
However, we do not have smart contract tutorials on how to schedule your smart contract call in the future directly from a smart contract. This is a documentation gap and I think we should include them in the documentation.

Solution

We need to write two tutorials on HSS(via smart contracts):

• Basic Example Contract(the "hello world" of HSS)
• Advanced Example Contract(that includes how to use all the features available via HSS and more specifically HIP-1215)

Alternatives

No response