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[eceltov]

Added the new concept of formats. Formats are classes that streamline request parameter validation. There are two types of formats:

• Loose formats: PHP Attribute classes that replace existing @param and @Param endpoint annotations to make the syntax more consistent, add syntax highlighting, and add more control over parameter validation with Validator classes.
• Format classes: Standalone classes acting as containers for loose format attributes. Instead of adding a loose format attribute for each parameter, the endpoint can be attributed with a single format attribute referencing the format class.

A new command meta:convert was added that can convert @param and @Param endpoint annotations to loose format attributes.

The swagger generator was made dependent on the new format attributes and newly includes endpoint descriptions, value examples based on format type, and array type support.

The existing endpoints were converted using meta:convert. The BasePresenter was refactored to validate requests using the new format attributes. The RegistrationPresenter::actionCreateInvitation endpoint was refactored to use a format class as an example.

PATH parameters are not validated yet, but were assigned loose format attributes. Nested format classes are not yet supported.