Extend Wallet airdrop for Adex Stakers for next 18 months

As orginal is:

Out of the 1 billion total $WALLET supply, a generous 10% goes to ADX stakers, distributed over 18 months as additional staking rewards; this staking reward will be locked (distributed in xWALLET and received only in the Ambire Wallet itself).

This will end in 2023.

Let's extend it for next 18 month in same rules. It's win-win for Adex stakers and Wallet holders.

https://blog.ambire.com/wallet-rewards-mechanism-explained-start-accumulating-value-before-the-token-is-launched/