T2551
Adds a new Alias component to house the UI for the namespace management function.
UI scaffolding, pseudocode and snapshot in this diff only - no functionality added yet.
[x] Kieran's building the CustomIcon update for the Alias navigation, will revise this part 1 once ready.
**Implementation Plan**
**Implement registerNewAlias() to handle alias registration**
[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