Feat: get_node_children_by_path in rust

[ZibanPirate]

Description

• Rust: added populated node code, can be accessed, for example: assert_eq!(umkb.code, "UMKB").
• Rust: added get_node_by_path function under "static" feature
• Rust: changed to a more accurate diff check in CI
• Data: "University of Badji Mokhtar Annaba" was missing the info about the uni, while it had info about its children, so I added the missing ./_data/ubma/info.json.

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update
• Updated the dataset