feat(m4): add solution exe-005 words-that-occur-most#3547

AlessandroVerzella wants to merge 5 commits intotomorrowdevs-projects:maintomorrowdevs-projects/programming-basics:mainfrom

AlessandroVerzella:solution/m4-005AlessandroVerzella/programming-basics:solution/m4-005Copy head branch name to clipboard