Use collapsed sections in main and tutorial README

[elboyran]

• Visually shorten the main and tutorial READMEs using collapsed sections:

<details><summary>Topic to expand below</summary>
<p>
 Here the expanded explanations.
</details>

this is the result

Topic to expand below

Here the expanded explanations.

• It the details are in a table, do not use <p>!

Apply this to

main README

• [x] Pre-requisites only for Macbook Pro with M1 Pro chip users
• [x] Text and image usage examples
• [x] Datasets, each of the modality
• [x] ONNX model, each of the modality; rename to Models

tutorials README

• Datasets and Tasks
• [x] Illustratative
• [x] Simple
• Summary of All Tutorials
• [x] Illustratative
• [x] Simple
• [x] Hyperparameters