Implementation of Mountain.class and some changes

...va/compileTransaction/stash-dir/Flammable.class.uniqueId1

...a/compileTransaction/stash-dir/Flammable.class.uniqueId12

...a/compileTransaction/stash-dir/GameBoard.class.uniqueId11

...a/compileTransaction/stash-dir/GameManage.class.uniqueId4

...leJava/compileTransaction/stash-dir/Grid.class.uniqueId13

...ileJava/compileTransaction/stash-dir/Grid.class.uniqueId5

...va/compileTransaction/stash-dir/Obstacles.class.uniqueId7

...ava/compileTransaction/stash-dir/Visitor.class.uniqueId11

...ava/compileTransaction/stash-dir/Visitor.class.uniqueId14

...compileTransaction/stash-dir/module-info.class.uniqueId10

build/tmp/compileJava/previous-compilation-data.bin

src/main/java/app/SimulatorApplication.java

src/main/java/controller/Controller.java

src/main/java/model/BoardElement.java

src/main/java/model/Builder/FireFirefightersBuilder.java

src/main/java/model/Builder/GameManage.java

src/main/java/model/EmptyElement.java

src/main/java/model/ExtinguishFire/Cloud.java

src/main/java/model/ExtinguishFire/ExtinguishFire.java

src/main/java/model/ExtinguishFire/FireFighter.java