Add a `perl-inline-module-autostub` command

[Ingy döt Net]

Typing out:

export PERL5OPT=-MInline::Module=autostub,Acme::Math::XS::Inline

can be a drag. This command will attempt to do it for you.

It can get info from Makefile.PL / dist.ini / Meta etc and guess the right
thing.

It will print the export command as well as source it so the developer can see
what is happening.

[Ingy döt Net]

Add these bin/ commands:

• perl-inline-module-status
• perl-inline-module-list
• perl-inline-module-autostub

[Ingy döt Net]

Skipping this for now. Makes things too complicated. The tutorial now has good
info on stubbing.