Add Infrastructure to allow eToro fee structures to Static Market

[brunocastroibarburu94]

eToro does not charge on trading but charges a flat 5 USD when withdrawing. eToro Fee

[brunocastroibarburu94]

Each order can have its own fee structure, multiple accounts is allowed, therefore one can have an eToro account and a personal bank account and when executing a sell order transfer the money into the personal account with a fee.