Update documentation (#1246)

* Created index.md

* Added project documentation

* Created images directory

* Add files via upload

* Deleted file

* Update architecture diagram in SVG format

* Delete website/versioned_docs/version-acs_cc/project/2026/tatiana.pirvu/images/architecture.drawio.svg

* Revise project documentation and add schematic

Updated documentation with progress on writing and testing phases, and added schematic image.

* Add files via upload

Author: tanioara