dist/tools: add Coccinelle check for ARRAYSIZE
dist/tools: add Coccinelle check for ARRAYSIZE

This Coccinelle script will warn when new code has the potential to use
the macro ARRAYSIZE instead of something like this
     sizeof(some_array) / sizeof(some_array[0])

OlegHahm/RIOT,aeneby/RIOT,kaspar030/RIOT,OlegHahm/RIOT,toonst/RIOT,josephnoir/RIOT,aeneby/RIOT,basilfx/RIOT,cladmi/RIOT,ant9000/RIOT,basilfx/RIOT,josephnoir/RIOT,basilfx/RIOT,OTAkeys/RIOT,miri64/RIOT,yogo1212/RIOT,mtausig/RIOT,miri64/RIOT,RIOT-OS/RIOT,cladmi/RIOT,toonst/RIOT,RIOT-OS/RIOT,miri64/RIOT,mtausig/RIOT,rfuentess/RIOT,OlegHahm/RIOT,smlng/RIOT,RIOT-OS/RIOT,OTAkeys/RIOT,jasonatran/RIOT,ant9000/RIOT,cladmi/RIOT,RIOT-OS/RIOT,yogo1212/RIOT,jasonatran/RIOT,kaspar030/RIOT,toonst/RIOT,authmillenon/RIOT,cladmi/RIOT,authmillenon/RIOT,OTAkeys/RIOT,authmillenon/RIOT,yogo1212/RIOT,josephnoir/RIOT,basilfx/RIOT,OlegHahm/RIOT,authmillenon/RIOT,x3ro/RIOT,OlegHahm/RIOT,jasonatran/RIOT,kYc0o/RIOT,smlng/RIOT,toonst/RIOT,kaspar030/RIOT,authmillenon/RIOT,toonst/RIOT,rfuentess/RIOT,aeneby/RIOT,rfuentess/RIOT,josephnoir/RIOT,yogo1212/RIOT,smlng/RIOT,basilfx/RIOT,x3ro/RIOT,ant9000/RIOT,kaspar030/RIOT,mtausig/RIOT,mtausig/RIOT,aeneby/RIOT,cladmi/RIOT,x3ro/RIOT,yogo1212/RIOT,miri64/RIOT,rfuentess/RIOT,OTAkeys/RIOT,miri64/RIOT,rfuentess/RIOT,ant9000/RIOT,x3ro/RIOT,smlng/RIOT,yogo1212/RIOT,kYc0o/RIOT,x3ro/RIOT,jasonatran/RIOT,OTAkeys/RIOT,kYc0o/RIOT,RIOT-OS/RIOT,ant9000/RIOT,aeneby/RIOT,jasonatran/RIOT,mtausig/RIOT,kaspar030/RIOT,josephnoir/RIOT,kYc0o/RIOT,kYc0o/RIOT,smlng/RIOT,authmillenon/RIOT