feat(nestjs-query): implement getApiUrl

[issa012]

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What is the current behavior?

getApiUrl throws errors

What is the new behavior?

getApiUrl is implemented fixes #5606

Notes for reviewers

Using workaround, since GraphQLClient's url field is private

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: 64cbcd6c669a1947453c857093e096af4aa9125c

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@refinedev/nestjs-query	Minor

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