games/gcompris-qt: update to 3.0

It contains 182 activities, including 8 new ones:

• "Mouse click training" is an exercise to practice using a mouse with left and right clicks.
• In "Create the fractions", represent decimal quantities with some pie or rectangle charts.
• In "Find the fractions", it's the other way: write the fraction represented by the pie or rectangle chart.
• With "Discover the International Morse code", learn how to communicate with the International Morse code.
• In "Compare numbers", learn how to compare number values using comparison symbols.
• "Find ten's complement" is a simple exercise to learn the concept of ten's complement.
• In "Swap ten's complement", swap numbers of an addition to optimize it using ten's complement.
• In "Use ten's complement", decompose an addition to optimize it using ten's complement.

Announcement: https://gcompris.net/news/2023-01-18-en.html