[+] DATOSHI macro

[*] Some fixes in ledger

added dap_ledger_t

group

[*] Complete UTXO API with tokens, tokens emissions and tx token.
[*] Fixed calc ballance
[*] dap_chain_addr changed is internal structure a little, same with related macro defines
[*] Others renames and refactors

[+] Datum operations functions
[*] Consensus and class are splitted. Class is for feature usage.
[*] Added const* everywhere (almost)

[-] Removed cache init calls
[*] Splitted token byt tx_item_token, token itself and token_emission

added creation of transfer transaction by addr and sum in cache
fixed errors in the  transaction cache
modify create items functions

and sign items.
Added auxiliary functions for working with transaction items

modify structs for transaction items (dap_chain_tx_*)