Ajout TD2 (utilisation du debugger)

src/main/java/fr/univamu/progav/td2/ASimpleLoop.java

src/main/java/fr/univamu/progav/td2/GuessingGame.java

src/main/java/fr/univamu/progav/td2/People.java

src/main/java/fr/univamu/progav/td2/Ratio.java

src/main/java/fr/univamu/progav/td2/TD2.md

src/main/resources/breakpoint.png

src/main/resources/debug-panel.png

src/main/resources/debug.png

src/main/resources/mute-breakpoint.png

src/main/resources/rerun-auto.png

src/main/resources/rerun-failed.png

src/main/resources/rerun.png

src/main/resources/resume.png

src/main/resources/run.png

src/main/resources/step-into.png

src/main/resources/step-out.png

src/main/resources/step-over.png

src/main/resources/stop.png

src/main/resources/view-breakpoint.png

src/test/java/fr/univamu/progav/td2/ASimpleLoopTest.java