T2551
Depends on D12852
Upgrades the `sendXec` to take in alias registration parameters (alias, alias flag & payment fee) and `generateOpReturnScript` to append the appropriate alias prefix hex.
[Cashtab] [Alias] pt 1 - Create scaffold for new Identity component
**[Cashtab] [Alias] pt 2 - Upgrade sendXec() to handle alias registration**
[Cashtab] [Alias] pt 3 - Implement isAliasAvailable function
[Cashtab] [Alias] pt 4 - Implement isAddressRegistered function
[Cashtab] [Alias] pt 5 - Implement getAddressFromAlias function
[Cashtab] [Alias] pt 6 - Implement isLocalAliasStateLatest function
[Cashtab] [Alias] pt 7 - Enable alias lookup for Send XEC component
[Cashtab] [Alias] pt 8 - Enable alias lookup for Send Token component
[Cashtab] [Alias] pt 9 - Implement pricing mechanism
[Cashtab] [Alias] pt 10 - Server cron job
[Cashtab] [Alias] pt 11 - Upgrade tx history to recognize alias registration txs