Make Genhash-Script IPv6 compatible

[pfennig42]

Problem

ATM the IPEntry-Struct is stored in an integer with a length of 32 bytes (https://github.com/activecm/safelist-tools/blob/main/genhash/main.go#L48). Therefore only IPv4-Adresses can be stored.
When trying to use an IPv6-Adress, the script throws an error [*] Error reading data from .: json: cannot unmarshal number 42540766490510755371168322545197776895 into Go struct field EntryIPRange.ranges.ranges.end of type uint32

Replication

Try to hash an entry like that: { "comment": "", "name": "Public: fe80::/62", "ranges": { "dst": true, "network_uuid": { "Kind": 4, "Data": "/////////////////////w==" }, "ranges": [ { "end": 338288524927261089654018896841347694592, "start": 338288524927261089727805873136185901055 } ], "src": false }, "schema_version": 5, "type": "cidr" },

Possbile fix

Unfortunately I did not find a way where GO would support uint128, to store a IPv6, natively. But there are workarounds (e.g https://pkg.go.dev/lukechampine.com/uint128). An other way could be to re-implement it.