[+] Added wrapping dap_chain_ledger. At this wrapping input wrapping structur dap_ledger_t and wrapping functions: dap_chain_ledger_set_local_cell_id, dap_chain_node_datum_tx_calc_hash, dap_chain_ledger_tx_add, dap_chain_ledger_token_add, dap_chain_ledger_token_emission_add, dap_chain_ledger_token_emission_find, dap_chain_ledger_tx_get_token_ticker_by_hash, dap_chain_ledger_tx_remove, dap_chain_ledger_purge, dap_chain_ledger_tx_hash_is_used_out_item, dap_chain_ledger_calc_balance, dap_chain_ledger_calc_balance_full, dap_chain_ledger_tx_find_by_hash, dap_chain_ledger_tx_find_by_addr, dap_chain_ledger_tx_find_by_pkey, dap_chain_ledger_tx_cache_find_out_cond.

[*] Fix. Added description some objects. And fixed wrapping object dap_chain_cell_id and dap_chain_node_addr.

[+] Added method loadFromCfg. Added implementation findById for class type Chain, this is wrapping dap_chain.