Convert the SectionService to the new Repository/DAO/Map pattern

[NateWr]

The section entity needs to be converted to use the new pattern for DAOs, Maps and Repositories introduced in #5328. This requires the following:

• [ ] Convert the DAO to extend EntityDAO and use type hints.
• [ ] Convert the SectionService to a repository .
• [ ] Adapt the schema for add/edit operations and add methods to add/edit/delete users to the DAO/Repository.
• [ ] Convert SectionService::getProperties() to a Map that extends PKP\core\maps\SchemaMap.
• [ ] Add any necessary methods to SectionService so that direct access to the DAO is not required.
• [ ] Refactor existing uses of DAORegistry::getDAO('SectionDAO') to use the repository instead.

PRs:

• https://github.com/pkp/pkp-lib/pull/8604
• https://github.com/pkp/ojs/pull/3741
• https://github.com/pkp/omp/pull/1319
• https://github.com/pkp/ops/pull/455

Further PRs:

• https://github.com/pkp/quickSubmit/pull/69
• https://github.com/pkp/ojs/pull/3784

[bozana]

@NateWr, could you please review the PRs above?

[NateWr]

Looks good @bozana! I've left a few comments with possible bugs, but it's mostly stylistic suggestions. Go ahead and merge once you're happy with it. :+1:

[bozana]

Thanks a lot @NateWr!