Ignore input data as requested by puzzle author 🧹

app/.gitignore

...test/resources/app/jonas/adventofcode2018/d01/example.txt

...c/test/resources/app/jonas/adventofcode2018/d01/input.txt

...est/resources/app/jonas/adventofcode2018/d02/example1.txt

...est/resources/app/jonas/adventofcode2018/d02/example2.txt

...c/test/resources/app/jonas/adventofcode2018/d02/input.txt

...test/resources/app/jonas/adventofcode2018/d03/example.txt

...c/test/resources/app/jonas/adventofcode2018/d03/input.txt

...test/resources/app/jonas/adventofcode2018/d03/testing.txt

...test/resources/app/jonas/adventofcode2018/d04/example.txt

...c/test/resources/app/jonas/adventofcode2018/d04/input.txt

...test/resources/app/jonas/adventofcode2018/d05/example.txt

...c/test/resources/app/jonas/adventofcode2018/d05/input.txt

...test/resources/app/jonas/adventofcode2018/d06/example.txt

...c/test/resources/app/jonas/adventofcode2018/d06/input.txt

...test/resources/app/jonas/adventofcode2018/d06/testing.txt

...test/resources/app/jonas/adventofcode2018/d07/example.txt

...c/test/resources/app/jonas/adventofcode2018/d07/input.txt

...test/resources/app/jonas/adventofcode2018/d08/example.txt

...c/test/resources/app/jonas/adventofcode2018/d08/input.txt