[Feat][Typescript Angular] Implement deepObject query params (OAS3.0)

[filiptc]

Generate correct service implementation for typescript-angular for deepObject style query parameters of type object, as per OAS 3.0 Specification.

• deepObject – simple non-nested objects are serialized as paramName[prop1]=value1&paramName[prop2]=value2&....

This closes #19342 and allows for the correct implementation of JSON:API pagination and filtering.

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cc Typescript Committee: @TiFu @taxpon @sebastianhaas @kenisteward @Vrolijkx @macjohnny @topce @akehir @petejohansonxo @amakhrov @davidgamero @mkusaka @joscha

[joscha]

• add a test somewhere that exercises this codepath and generates a query string with the expected format?

[filiptc]

• add a test somewhere that exercises this codepath and generates a query string with the expected format?

Will do, and push together with the rest of suggestions.

[filiptc]

Pushed tests (d2a06dd). Kindly double check, as I wasn't previously familiar with the testing patterns. 🙂

[filiptc]

Increased Node version as tests were failing due to Angular refusing to compile on NodeJS versions <18. Node 18 is required for all currently supported Angular versions (docs).

[macjohnny]

are these assertions related to the deepObject case?

[filiptc]

Yes, the last parameter is isDeep.

[macjohnny]

thanks for your contribution!

[macjohnny]

how about having it in the newest angular version, so it doesnt get lost when deleting older versions?

[filiptc]

Happy to. I took your comment here too literally.