fix: oneof implementation

[jacopomaroli]

Description
Currently oneOf and anyOf are treated equally

modelina/src/interpreter/Interpreter.ts

Lines 85 to 86 in 7a23949

	this.interpretAndCombineMultipleSchemas(schema.oneOf, model, schema, interpreterOptions);
	this.interpretAndCombineMultipleSchemas(schema.anyOf, model, schema, interpreterOptions);

This PR aims to handle correctly oneOf in accordance to the OpenAPI specs https://swagger.io/docs/specification/data-models/oneof-anyof-allof-not/#anyof-vs-oneof

I needed to update one of the tests because there's no reason for oneOf to generate an array type implicitly in the datamodel definition

Test Suites: 115 passed, 115 total
Tests:       699 passed, 699 total
Snapshots:   123 passed, 123 total
Time:        40.322 s
Ran all test suites.

Related issue(s)

Fixes #367

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[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[coveralls]

Pull Request Test Coverage Report for Build 2677437607

• 11 of 11 (100.0%) changed or added relevant lines in 3 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.007%) to 92.098%

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Totals
Change from base Build 2606652547:	-0.007%
Covered Lines:	2816
Relevant Lines:	2914

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💛 - Coveralls

[jonaslagoni]

Hey @jacopomaroli, thanks for providing this!

I really dont want to change what's currently on the master branch, because this change is really difficult to do right in that environment.

Do you have the possibility to recreate it and target next?

I can guide you through the change it require 🙂

[jonaslagoni]

Fixed in next here: #899