Add Brazilian Portuguese checkers and keyboard layout

[0xc0da]

This pull request adds checkers for Brazilian Portuguese words and a Brazilian Portuguese (ABNT2) keyboard layout.

Checkers

• Area codes (checkers_available/BR_area_codes_checker.rb)
• Soccer teams (checkers_available/BR_soccer_teams_checker.rb)
• Colours (checkers_available/PTBR_colour_checker.rb)
• Dates (checkers_available/PTBR_date_checker.rb)
• Emotional words (checkers_available/PTBR_emotion_checker.rb)
• Explicit words (checkers_available/PTBR_explicit_checker.rb)
• Family (checkers_available/PTBR_family_checker.rb)
• Religion (checkers_available/PTBR_religion_checker.rb)
• Seasons (checkers_available/PTBR_season_checker.rb)

Keyboard layout
Add the file for the most common Brazilian Portuguese keyboard layout (ABNT2 standard). Example image: https://en.wikipedia.org/wiki/Portuguese_keyboard_layout

Screenshots

[digininja]

Thanks for these, as always with foreign languages I don't speak, trusting you aren't Rick Rolling me.

[0xc0da]

Of course. Brazilian Portuguese is my native language, and these are improved versions of what I used for my talk at Black Hat Sao Paulo a while ago: https://speakerdeck.com/0xc0da/a-song-of-hashes-and-dumps-what-ive-learned-from-cracking-br-passwords?slide=32

Thanks for merging.