dependency management on setup

[Alexander-M-Waldman]

After pip installing, the module raises errors about dependencies not being installed, including:

• cx_oracle
• psycopg2
• dateutil

These should either be installed as part of setup or suppressed and explicitly handled with warnings as needed, depending on the method that is being used.

[jrmidkiff]

Furthermore, cx_oracle is limited to python3.10, which currently means that that geopetl is thus limited to using python3.10 as well, which is deprecated October 2026

[jrmidkiff]

Similarly, geopetl is dependent on psycopg2 and cannot work with psycopg because of the requirement that the cursor accept the keyword argument cursor_factory here. Thankfully there's no present concern about psycopg2 being deprecated