Move and add tests

src/main/java/tfm/programs/WhileLoop.java

src/main/java/tfm/programs/cfg/CFG_Test1.java

src/main/java/tfm/programs/cfg/CFG_Test2.java

src/main/java/tfm/programs/cfg/CFG_Test3.java

src/main/java/tfm/programs/cfg/CFG_Test4.java

src/main/java/tfm/programs/cfg/CFG_Test5.java

src/test/res/carlos/Test1.java

src/test/res/ltd-samples/BasicBreak.java

src/test/res/ltd-samples/BasicContinue.java

src/test/res/ltd-samples/BasicForeach.java

src/test/res/ltd-samples/BasicIf.java

src/test/res/ltd-samples/BasicIfElse.java

src/test/res/ltd-samples/BasicSwitch.java

src/test/res/ltd-samples/BasicSwitchDefault.java

src/test/res/ltd-samples/BasicSwitchNoBreak.java

src/test/res/ltd-samples/Bucles_1.java

src/test/res/ltd-samples/Bucles_2.java

src/test/res/ltd-samples/Bucles_3.java

src/test/res/ltd-samples/Bucles_4.java

src/test/res/ltd-samples/Bucles_5.java