github.io documentation restructuring

[kta-intel]

Description: This PR restructures the current github.io. Contents are intact and migrated from the old documentation with minor updates and additions

Objective:

1. Easier for a user to navigate (get started guide, feature list, etc.)
2. Easier for developer team to maintain and expand upon
3. Better aligns with other Intel AI software documentation while drawing inspiration from ecosystem FL documentation

Added:

1. get started guide (using existing examples and installation instructions)
2. release notes (keep users in the loop with changes in a more self-contained way)
3. blogs & publications (for better promotion to dev community)
4. features (collated existing docs into one place to better highlight features)

[porteratzo]

Looks good to me

[manuelhsantana]

This is a fantastic PR! The reorganization of the documentation is a massive improvement and it's clear that a lot of effort has been put into this. The structure is much more intuitive and user-friendly, which will be appreciated by all the users!.
I really like the sections:

• Features page, the addition of the Features/ aggregation algorithms <- liked!
• Contributing to OpenFL <- especially this
• Releases
• Blog and Publications

I only request changes on minor comments or typos.
This is a significant contribution. Well done Kevin!

[manuelhsantana]

This is a fantastic PR! The reorganization of the documentation is a massive improvement and it's clear that a lot of effort has been put into this. The structure is much more intuitive and user-friendly, which will be appreciated by all the users!. I really like the sections:

• Features page, the addition of the Features/ aggregation algorithms <- liked!
• Contributing to OpenFL <- especially this
• Releases
• Blog and Publications

I only request changes on minor comments or typos. This is a significant contribution. Well done Kevin!

I realized I forgot to mention something in my previous comment. I've been thinking that perhaps we should consider adding a [+] icon to indicate where sections can be expanded. However, I'm a bit torn on this. On one hand, it could enhance user navigation and ensure that no sections are overlooked. On the other hand, it might detract from the minimalist aesthetic that I really appreciate in the current design. It's a minor point, but I thought it was worth bringing up for discussion. Anyway, great job on this PR!

[manuelhsantana]

Already reviewed and look great and ready for the merge!

[psfoley]

@kta-intel once the conflicts with docs/workflow_interface.rst are resolved, I will merge this

[kta-intel]

I think it should be good now. I'm not sure the exact cause of the merge conflict, but pulling the original /docs/workflow_interface.rst, merging the main dev branch, then deleting it seemed to resolve it.

Ran a final check to make sure everything ran as it did before.

Thanks again everyone for the review!