Docs/guide

[ashdtu]

Checklist

• Confirmed that run-checks all script has been executed.
• Made sure the book is up to date with changes in this PR.

Related Issues/PRs

#1103 : Better documentation of Guide example.
#1153: Improve Tensor introduction
#1154: Improve Dataset transform guide

Changes

Corresponding to each issue, here are the changes in this PR:
#1103 : The changes suggested bridge the gap between the example code provided in examples/guide vs what is written in guide. The documentation currently lacked the partitioning of code into model, data, training files similar to the example code. This sometimes made it hard to follow if for eg someone is copy-pasting code from there. Fixed these issues and added helpful comments with reference to original example.

#1153

• Added introduction of Tensor with rank, similarity/diff for people coming from PyTorch.
• Initialization from data, floats api. .convert() , elem etc.
• Underline importance of ownership and cloning with example.
• No stateful operations : TODO (discuss)

#1154

• Added introduction of dataset transform with example usages.
• Batcher omitted as already present in current guide in mnist tutorial and other concepts covered by Rust introduction commit.

[nathanielsimard]

Some small corrections, see my comments bellow.

[louisfd]

Thanks a lot for the addition of many details. I have a high number of comments but most of them are about typos

[antimora]

Quick feedback re formatting (haven't read the content in details yet).

I recommend you format the text using something like prettier if you have a VS/Neovim plug-in. We have a configuration for prettier: https://github.com/tracel-ai/burn/blob/main/burn-book/.prettierrc.json (or you can define yours)

This helps formatting tables and wrapping markdown text.

[ashdtu]

Many thanks @nathanielsimard, @louisfd, and @antimora for the suggestions. Incorporated in the latest commit. Let me know if it's good to go.

[louisfd]

Very nice, all conversations were well resolved. I spotted two minor typos but approving in advance.

[ashdtu]

Thank again for the review. Made the minor fixes suggested. Merging now!