Lot of untracked files pollute working directory

[algomaster99]

There are a lot of untracked files currently in the working directory and it makes it difficult to use the GUI for source controls in an IDE like IntelliJ. It is recommended to add such files to .gitignore.

cp.txt
experimentation/tools/sorald/__pycache__/
experimentation/tools/sorald/_helpers/__pycache__/
experimentation/tools/sorald/legacy/__pycache__/
experimentation/tools/soraldscripts.egg-info/
experimentation/tools/tests/__pycache__/
src/test/resources/scenario_test_files/classpath-dependent-project/spoon.classpath.tmp

[slarse]

I suggest just grabbing the Python and Java gitignores and putting them in our gitignore: https://github.com/github/gitignore