Proposal: Move openapi-schema-parser to parser-js

[princerajpoot20]

As part of the 2026 community goals (more details here: asyncapi/community#3495), after conducting an audit of all repositories, @derberg suggested (reference: https://asyncapi.slack.com/archives/C34F2JV0U/p1774973085382029?thread_ts=1774874525.585229&cid=C34F2JV0U) moving protobuf-schema-parser, avro-schema-parser, and openapi-schema-parser to parser-js.

I am opening this issue to gather the views and approval of the code owners of this repository.

Tagging all code owners for their feedback and approval.
@AayushSaini101 @princerajpoot20

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[princerajpoot20]

Approved. Good to proceed from my side.