Add interactive tutorial guide to enhance user experience

[iamsherlocked1891]

This pull request introduces an interactive tutorial guide to help users better understand and navigate the platform. The tutorial provides step-by-step guidance to address common user challenges and improve onboarding.

Key changes:

1. New Icon on the Sidebar:
   That new icon was added to the sidebar to trigger the tutorial guide, offering helpful tips on using the platform.
2. Page-Specific Guides:
   Interactive guides have been developed for the following pages: homepage, model training page, model testing page. Each guide includes detailed steps to walk users through the functionality of the respective page.

The tutorial guides were implemented using the Driver.js library to ensure an intuitive and visually engaging user experience.
A store has been created using Pinia to track when the tutorial guide is needed. This ensures that the tutorial is not displayed repeatedly unless required by the user.

Attached below are several screenshots to visually demonstrate the changes.

[iamsherlocked1891]

Test lint-test-build / test-webapp is failing because, in my previous pull request (where I updated the homepage), changes were made, including modifications to the training.cy.ts test file (webapp/./cypress/e2e/training.cy.ts), where this issue was resolved.

On this branch, the file remains unchanged, which is why the error occurs. Once the changes from the previous pull request are approved and merged, this error will be resolved here as well.

[tharvik]

thanks for the hard work, that looks great and make it way more accessible to everyone 🎉

as per usual, I've left a bunch of comments, tell me if you don't have the time to fix thoses

ho yeah, and FWIW, if you want to base a PR upon another (such as your redesign of the homepage in #845), you can change the base branch by editing this PR. that will fix some duplication and probably allow the CI to pass.