Update typescript open API generator to handle the IntOrString type

[alex-bezek]

Resolves #666

The 1 main change here is the addition of the IntOrString type to the src/types.ts file. The rest is the result of running
GEN_ROOT=/home/alexbezek/code/gen npm run generate and running npm run build to verify it compiles

Depends on kubernetes-client/gen#213

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• ✅ alex bezek (7bd64c9, f8d0da7)

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[brendandburns]

/lgtm
/approve

Thank you for taking the time to do this!!

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: alex-bezek, brendandburns

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