chore: update docs to include links to Zapier tutorials

[nicomiguelino]

Description

• Fixes [CHORE] Update docs to include links to Zapier tutorials from screenly.io #37

How Has This Been Tested?

• This pull request only contains changes to the documentation.

Checklist

• I have performed a self-review of my code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation (where applicable).
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

Screenshots

[Copilot]

Pull Request Overview

This pull request updates the documentation by changing the "Quick Start" section to "Getting Started" and adding direct links to Zapier tutorials for managing Screenly content. It also removes outdated integration guides and cookbook documentation related to Google Drive, Dropbox, and other example integrations.

Reviewed Changes

Copilot reviewed 15 out of 15 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
README.md	Updated the introduction section and added Zapier tutorial links.
docs/example-integrations.md	Removed outdated example integrations documentation.
docs/cookbook/uploading-an-asset-via-google-drive.md	Removed outdated Google Drive integration guide.
docs/cookbook/uploading-an-asset-via-dropbox.md	Removed outdated Dropbox integration guide.
docs/cookbook/README.md	Removed cookbook overview for third-party integrations.