add options in pi3.sh

[vay3t]

It is useful to create installer options. To be able to have an easy configuration and not have to edit the script every time (and look for the specific lines)

Advantages: it would be easier for automation with other scripts

example:

Usage: ./pi3.sh [-arg]

-h <hostname> (or help?)
-m minimal
-f full
-t tft
-d doom (If it is possible to implement it someday)
-r <package> (if u need remove a tool, example metasploit)
-a <package> (if u like add a tool)
-w <version> (I can not think what letter to assign)
-v verbose (it is necessary?)

Just an idea that came to mind (I remember the builder of nethunter) I do not know if it is very practical in this case.

[nethunteros]

I like the idea.