[+] dap_config_load() for custom config loading

[+] dap-sdk/plugin module for universal plugins. By default builtin binary loader
[!] CLI server moved from dap_chain_net to the new module dap-sdk/net/cli_server
[!] app-cli module moved from cellframe-sdk to dap-sdk
[!] s_recv() -> dap_net_recv and also moved from dap_chain_net into the dap_net
[*] DARWIN related fixes