Add `--tui-privacy-max-ttl` flag to hide host and IP details for low ttl hops

[fujiapple852]

This is desirable when sharing screenshots, videos or text copies of a Trippy Tui screen and you wish to hide local hops which may contain sensitive information such as IP address, hostname and GeoIP data.

In the example below all hops with ttl <= 4 were masked by adding the new --tui-privacy-max-ttl 4 command line argument. This can also also be set in the config file as usual. The default value is 0, meaning no hops will be privacy masked.

Both the normal and hop detail navigation mode will be masked:

The world map is also masked for Geo IP data:

[c-git]

Really cool idea, is it a big step to make this configurable from within the application so like during runtime?

[fujiapple852]

It could be done, but would would the UX be for entering the desired ttl value? A pop up with a number entry box? The only alternative I can think of would be to have keys to increase/decrease the privacy threshold but that feels like overkill for this.