feat: Automate using GitHub Actions

[radiantly]

From what I understand, to update the repo, we still require to periodically run harwest codeforces or harwest atcoder. Instead, we could also offer the option of automatically setting up a GitHub Action that runs harwest and updates the repo daily. (using the cron directive in the .yml file)

A few ideas I have in mind:

• During initialization, we detect if the repository url is a GitHub repo. If yes, we prompt whether they are okay with automatic updates by a GitHub Action.
• If yes, we also add a .github/workflows/harwest.yml to the initial repo.
• Currently, the configuration data is stored in lib/resources. This will have to be changed to the repo itself (maybe a .config folder).
• If the user runs harwest codeforces or the like locally, we will pull first to receive the latest updated repo.

P.S. Great work with the project - really slick!

[Siddhant-K-code]

I think, first, we should implement as a secondary option of GitHub Action, later on we will add a feature which you discussed in 3rd Point.

Btw, what's your progress on it as of now, how can we start?

[vedantmamgain]

I was also curious about the progress of a Github Action.

[theSoberSobber]

probably never lol, this is too much work though, although i may make a pr after exams.