add toAscii method to Italian Internet provider
add toAscii method to Italian Internet provider

This was inspired by issue #189. Copied and adapted from French Internet provider. Even if current Person provider for Italian does not contains any accented letters, I added them anyway, for forward compatibility. The only current issue with Italian Person provider are names with accent inside, that currently are translated into invalid email, like "ld'amico@yahoo.com"
matriphe/Faker,nalekberov/Faker,chrismoulton/Faker,nikmauro/Faker,BePsvPT/Faker,syj610226/Faker,mseshachalam/Faker,simonfork/Faker,muya/Faker,CodeYellowBV/Faker,Beanhunter/Faker,lasselehtinen/Faker,stof/Faker,datagit/Faker,jadb/Faker,igorsantos07/Faker,drakakisgeo/Faker,oshancsedu/Faker,xfxf/Faker,shunsuke-takahashi/Faker,vlakoff/Faker,kevinrodbe/Faker,splp/Faker,pathirana/Faker,xfxf/Faker-PHP,d3trax/Faker,ravage84/Faker,jeffaustin81/Faker,cjaoude/Faker,zeropool/Faker,cenxun/Faker,antonsofyan/Faker,guillaumewf3/Faker,brainrepo/Faker,bmitch/Faker,kkiernan/Faker,kuldipem/Faker,duchaiweb/Faker-1,luisbrito/Faker,ivyhjk/Faker,selmonal/Faker,alexlondon07/Faker,Balamir/Faker,mousavian/Faker,huang53798584/Faker,oswaldderiemaecker/Faker,dongnhut/Faker,localheinz/Faker,davidyell/Faker