feat: enable v3 and scala for model generation

[jonaslagoni]

Description
This PR updates the models command to support AsyncAPI v3 and adds scala support.

It also fixes a bug in the example document by using the Kafka example for v3 as well as using the same file name as for v2 document to stay consistent.

Related issue(s)
Fixes asyncapi/modelina#1376

[derberg]

actually I think we need to first revert b682a8e and make another release as this is a breaking change and then this PR should make a bump and there should be a test added that will also validate the output of model generation. Then this PR will be with !

@Souvikns thoughts?

[jonaslagoni]

@derberg it wont be possible to add a test that catches breaking changes in the model generation. The amount of variants you would need to test makes it impossible

[derberg]

@jonaslagoni not good, but yeah I get your point. So might be that they best would be to block autoupdates 🤔

@Souvikns ?

[jonaslagoni]

Probably a good idea yea

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

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

See analysis details on SonarCloud

[Souvikns]

Blocking auto-updates makes sense but now we have to manually update most of the libraries, It will prevent the breaking changes but we would miss the minor features.

[derberg]

yeah, it sucks 😞 there is no best approach here 😞 loosing autoupdates sucks

or we complicate too much and nobody cares about output changes 🤔 nobody complains so far that latest modelina was bumped without breaking change

[jonaslagoni]

Replaced by #1376