Implement exercise T4L2/tags-add

[MousseDm]

Exercise Review

Exercise Discussion

#61

Checklist

• If you require a new remote repository on the Git-Mastery organization, have you created a request for it?
• Have you written unit tests using repo-smith to validate the exercise grading scheme?
• Have you tested the download script using test-download.sh?
• Have you verified that this exercise does not already exist or is not currently in review?
• Did you introduce a new grading mechanism that should belong to git-autograder?
• Did you introduce a new dependency that should belong to app?

[damithc]

@MousseDm Closing this as you already have one hp-* PR

[VikramGoyal23]

@damithc This seems to be their exercise implementation, not their hands-on implementation.

@MousseDm You have accidentally left in your implementation of hp-ignore-file in your tags-add branch, in the form of the commit 3f000ca.

[damithc]

@damithc This seems to be their exercise implementation, not their hands-on implementation.

Ah, right. Thanks @VikramGoyal23
reopening.