handling pagination in getting the sketches

[ulemons]

Motivation

The remote sketchbook is limited to 20 sketches. It is needed to enable the pagination in order to get all the remote sketches.

Change Description

Instead of doing just one call to retrive all the sketches, the component will keep calling the api with a window of 50 sketches per call. Untill it will get all of them.

Reviewer checklist

• PR address a single concern.
• The PR has no duplicates (please search among the Pull Requests before creating one).
• PR title and description are properly filled.
• Docs have been added / updated (for bug fixes / features)

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.

---

Umberto Sgueglia seems not to be a GitHub user. You need a GitHub account to be able to sign the CLA. If you have already a GitHub account, please add the email address used for this commit to your account.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[per1234]

I am able to reproduce #809 with the latest nightly build. With the build from this PR the remote sketchbook shows the >100 sketches from my Arduino Create sketchbook.

Thanks @ulemons!

[fstasi]

@ulemons can you please add a description to this pr?

take a look at this PR if you need some inspiration: #872

Thanks,
Francesco