docs: Revamp README to be simpler

[KhusPatel4450]

Updated README to improve clarity on TorchJD's features and usage, including new sections on scalarization and Jacobian descent.

EDIT by Valérian: To quickly take a look at the formatted README, click this: https://github.com/SimplexLab/TorchJD/blob/KhusPatel4450-patch-1/README.md

[PierreQuinton]

Thanks a lot for the PR, looking forward to improve the README.

I think the state you propose is nice, but maybe it brings something bad to the users: I'm afraid they will essentially just try some of the Scalarizers and then figure that it doesn't work for them, even though it is possible that JD would help them. It would be nice to bring back some importance to JD, saying that even if Scalarization is a good baseline, it is suggested to try using aggregators to try to resolve conflict as it can resolve problems that might be impossible to solve with standard scalarizers.

[PierreQuinton]

I think it would be nice to restore content about autojac and autogram at the end of the file (after the list of aggregs and scalarizers), it is an interesting piece of the lib that some people may want to use even without using aggregation.

[ValerianRey]

I think it would be nice to restore content about autojac and autogram at the end of the file (after the list of aggregs and scalarizers), it is an interesting piece of the lib that some people may want to use even without using aggregation.

I think it's a bit too long. Maybe we could talk about autogram, and hype people about it in like 3 lines, but just use links to the documentation for the actual examples?

[KhusPatel4450]

Hello this new commit has pretty much all comments addressed, I went in the direction of what Valerian said about the autogram engines.

[PierreQuinton]

looks good to me, we are not talking about autojac at all then? (I'm fine with it, just asking)

[KhusPatel4450]

I think autojac can be exaplained in that potential video we talked about, or sperately somewhere else. I think the main page though should largely stick to the two main contributions which is the scalarizers and aggregators.

And maybe that should be the theme around the video too but the video should probably be more general rather than getting too too technical

[ValerianRey]

I really like it a lot, thanks a lot for this PR and for the changes @KhusPatel4450 !

[ValerianRey]

I think it would be nice to restore content about autojac and autogram at the end of the file (after the list of aggregs and scalarizers), it is an interesting piece of the lib that some people may want to use even without using aggregation.

I like the length of the new autogram section: very short, but straight to the point and a good way to make people want to try it. I think we could add a paragraph of a similar size, just before it, for autojac.

[KhusPatel4450]

thank you for link change

[ValerianRey]

IMO this is ready to merge.

Can I merge @PierreQuinton @KhusPatel4450 or do you still have things you'd like to fix / improve?

[KhusPatel4450]

I am happy with this too, we can merge

[PierreQuinton]

LGTM, many thanks to both of you!