Obstacles more customizable + ObstacleField added

.idea/misc.xml

src/main/java/Shape/Obstacle.java

src/main/java/Shape/ObstacleField.java

src/main/java/org/example/newmat/GraphicsAndWindowsTest.java

target/classes/Shape/Obstacle.class

target/classes/Shape/ObstacleField.class

...classes/org/example/newmat/GraphicsAndWindowsTest$1.class

...classes/org/example/newmat/GraphicsAndWindowsTest$2.class

...t/classes/org/example/newmat/GraphicsAndWindowsTest.class