Move new testing utilities to their own entrypoint

[alessbell]

Closes #11780.

Creates a new @apollo/client/testing/alpha entrypoint for new testing utilities.

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🦋 Changeset detected

Latest commit: c9cc800a2d2b6f6c474091f0f5df58aa2a2783a4

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

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| Name | Type | | -------------- | ----- | | @apollo/client | Minor |

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size-limit report 📦

Path	Size
dist/apollo-client.min.cjs	38.61 KB (0%)
import { ApolloClient, InMemoryCache, HttpLink } from "dist/main.cjs"	46.49 KB (0%)
import { ApolloClient, InMemoryCache, HttpLink } from "dist/main.cjs" (production)	44.04 KB (0%)
import { ApolloClient, InMemoryCache, HttpLink } from "dist/index.js"	34.16 KB (0%)
import { ApolloClient, InMemoryCache, HttpLink } from "dist/index.js" (production)	32.04 KB (0%)
import { ApolloProvider } from "dist/react/index.js"	1.24 KB (0%)
import { ApolloProvider } from "dist/react/index.js" (production)	1.22 KB (0%)
import { useQuery } from "dist/react/index.js"	5.27 KB (0%)
import { useQuery } from "dist/react/index.js" (production)	4.35 KB (0%)
import { useLazyQuery } from "dist/react/index.js"	5.51 KB (0%)
import { useLazyQuery } from "dist/react/index.js" (production)	4.58 KB (0%)
import { useMutation } from "dist/react/index.js"	3.51 KB (0%)
import { useMutation } from "dist/react/index.js" (production)	2.73 KB (0%)
import { useSubscription } from "dist/react/index.js"	3.19 KB (0%)
import { useSubscription } from "dist/react/index.js" (production)	2.38 KB (0%)
import { useSuspenseQuery } from "dist/react/index.js"	5.44 KB (0%)
import { useSuspenseQuery } from "dist/react/index.js" (production)	4.11 KB (0%)
import { useBackgroundQuery } from "dist/react/index.js"	4.92 KB (0%)
import { useBackgroundQuery } from "dist/react/index.js" (production)	3.58 KB (0%)
import { useLoadableQuery } from "dist/react/index.js"	5.03 KB (0%)
import { useLoadableQuery } from "dist/react/index.js" (production)	3.69 KB (0%)
import { useReadQuery } from "dist/react/index.js"	3.32 KB (0%)
import { useReadQuery } from "dist/react/index.js" (production)	3.26 KB (0%)
import { useFragment } from "dist/react/index.js"	2.29 KB (0%)
import { useFragment } from "dist/react/index.js" (production)	2.24 KB (0%)

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[jerelmiller]

Ooo one thought I just had. Do we ever forsee us moving from alpha -> beta with this feature? If so, should we consider naming the folder experimental so that we can maintain the same entrypoint regardless of the prerelease designation we give it?

[alessbell]

Good call @jerelmiller! I'll rename it 👍