enable querying endpoints by a list of types

[chiptus]

for #4777 we need a way to query by a list of types.

otherwise, we do either:

• make a few API requests, each with the endpoint type
• make one big request and filter on the client-side.

Since we already have the filtering mechanism, I suggest adding this to the API

[stale]

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[deviantony]

sshhh go away bot