Fetch issue labels

[jwodder]

Allegedly, an issue cannot have more than 100 labels on it at once, so requesting an issue's first 100 labels should yield all of them without the need for special pagination.

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Problem: Trying that just gave me the error:

Type: MAX_NODE_LIMIT_EXCEEDED
Message: By the time this query traverses to the labels connection, it is requesting up to 1,000,000 possible nodes which exceeds the maximum limit of 500,000.

For orgs-with-issues in particular, the page size has to be reduced to less than about sqrt(5000 / org_qty) in order for the command to succeed. Looks like I'll have to implement nested pagination....

• Setting the labels page size to ten should be sufficient.