This adds support for host side go compiler to Turris Omnia. Sample packages are obfs4proxy ( https://gitlab.labs.nic.cz/turris/turris-os-packages/commit/1f6ca491459f555b49484e3f6721332ade1b03f2 ) and meek ( https://gitlab.labs.nic.cz/turris/turris-os-packages/commit/9e78612f2d384d41b2d315b9045668fe0709497f )