Documentation need adjustments for new GraphPPL.jl

[bvdmitri]

It is a tracking progress issue. I've started adjusting the documentation in a separate branch #dev-4.0.0-documentatation.

• [x] Index (done by @bvdmitri, waiting for review)
• [x] README (done by @bvdmitri, waiting for review)

Contributing section

• [x] New documentation (done by @bvdmitri, waiting for review)
• [x] New examples (done by @bvdmitri, waiting for review)
• [x] New package (done by @bvdmitri, waiting for review)
• [x] New release (done by @bvdmitri, waiting for review)
• [x] Overview (done by @bvdmitri, waiting for review)

Library section

• [x] Bethe Free Energy (done by @bvdmitri, waiting for review)
• [x] Exported Methods (done by @bvdmitri, waiting for review)
• [x] Functional Forms (done by @bvdmitri, waiting for review)
• [x] Model Construction (done by @bvdmitri, waiting for review)

Manuals

• [x] Getting started (done by @bvdmitri, waiting for review)
• [x] Comparison (done by @bvdmitri, waiting for review)
• [x] Model specification (done by @bvdmitri, waiting for review)
• [x] Constraints specification (done by @bvdmitri, waiting for review)
• [x] Meta specification (done by @bvdmitri, waiting for review)
• [x] Custom Node (done by @bvdmitri, waiting for review)
• [x] Delta Node (done by @bvdmitri, waiting for review)
• [x] Debugging (done by @bvdmitri, waiting for review)

Inference

• [ ] Static Inference
• [x] Streamlined inference (done by @bvdmitri, waiting for review)
• [x] Manual (removed entirely @bvdmitri, we don't want to support it anymore imo)
• [ ] Overview
• [x] Postprocess (done by @bvdmitri, waiting for review)

We also need a new section on migration from previous RxInfer to the new one.

• [x] Migration Guide

I may need your help @albertpod , @bartvanerp , @wouterwln with it. More structured request will be a bit later. If not changing, but at least reviewing. Let's make it a nicer release.

[bvdmitri]

@wouterwln I've updated the constraints specification documentation to my taste in this branch. Could you please check it out and merge it with https://github.com/ReactiveBayes/RxInfer.jl/pull/172 ?

Would be also great if you could review the @meta section

[wouterwln]

Reviewing in #documentation-check.

[wouterwln]

@bvdmitri I did a revision of the contribution guide that's not reflected in this branch, is this on purpose or did we branch before I did the revision in main?

[bvdmitri]

Yeah, we branch out before you did the revision, I will update the status of this branch and sync it with the main today such that we can work on the most recent version. Thanks for reminding me.

[bvdmitri]

@wouterwln I synced this branch with the main