Add support for date32 types in Docbrownv4, previously used to crash

[arienandalibi]

Fixes: Exception: Failed to load graph: Failed to load graph LoadError { source: InvalidPropertyType(Date32) }

Includes some tests

[ljeub-pometry]

For the compilation error, if you set the rust-version in the main Cargo.toml to 1.88 it should fix it.

[ljeub-pometry]

This should fix #2001 and should be based of master instead