[*] Move VPN related command from NET module to VPN module

[*] Fix verification of emission
[*] Fix double reply in  tx_verify

[-] Remove mining dependency from a lot of modules
[-] Remove srv-vpn dependency from modules/net

Revert "[*] dap_chain_node_mempool_process() now processes not only transactions but also other event types"

This reverts commit b726fc32

another country

[*] Reworked mempool proc
[+] Added datum verification