Add lint checker

[ammaratef45]

see this and add lint checking to the repository.

[0crat]

Job gh:ammaratef45/attendance#28 already assigned to @ammaratef45, can't assign to @ammaratef45

[0crat]

The job #28 assigned to @ammaratef45/z, here is why; the budget is 30 minutes, see §4; please, read §8 and §9; if the task is not clear, read this and this; there will be no monetary reward for this job

[0crat]

Manual assignment of issues is discouraged, see §19: -5 point(s) just awarded to @ammaratef45/z

[0crat]

It is strongly discouraged to assign jobs to their creators, see §19: -15 point(s) just awarded to @ammaratef45/z

[0crat]

Bug was reported, see §29: +15 point(s) just awarded to @ammaratef45/z

[0pdd]

@ammaratef45 the puzzle #36 is still not solved.

[0crat]

The job #28 is now out of scope

[0crat]

Order was finished: +30 point(s) just awarded to @ammaratef45/z

[0pdd]

@ammaratef45 the puzzle #44 is still not solved; solved: #36.

[0pdd]

@ammaratef45 all 2 puzzles are solved here: #36, #44.