feat(codegen): support new linked applications model

[akantcheff]

This PR aims to support the incoming feature of linked applications.

This new model uses OpenAPI inheritance and unfortunately the OpenAPI Generator does not support inheritance for the moment.

We expect both AdvancedApplication and LegacyApplication classes to extend AbstractApplication class and to implement the Application interface, but it does not: all are independent classes.
So for the moment we ignore the class AbstractApplication while inheritance is still not supported. The class Application is used to handle both advanced and legacy applications for some common routes. Some routes are exclusively for legacy applications and the LegacyApplication class is used. AdvancedApplication is generated but not used by API classes.

The class ApplicationApi is no longer ignored by the OpenAPI Generator and comes with breaking changes. Meaning that we need to release a major version 2.0.0 after this PR.

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⚠️ This PR is still in progress
TODO:

• Wait for fix(get-application-page): incorrect content type bonita-openapi#173 to be merged (for info I update the spec with the maven command and apply manually the changes from the PR)
• Release new version of openapi
• Update spec with new version
• Create tests that is able to handle applications prior 10.2 and after 10.2
• Use bonita docker image from JFrog
• Login to JFrog in github actions

[sonarcloud]

Quality Gate passed

Issues
0 New issues
4 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud