Cherrypick: Standalone px decrypt (#1473)

[jonmolle]

Adds a tool for a standalone panel exchange private query decryption job.

[wfa-reviewable]

This change is 

[SanjayVas]

Reviewed 2 of 2 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @stevenwarejones)

[stevenwarejones]

Reviewable status: all files reviewed, 1 unresolved discussion (waiting on @jonmolle)

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src/main/kotlin/org/wfanet/panelmatch/client/tools/BeamJobsMain.kt line 28 at r1 (raw file):

import org.apache.beam.sdk.options.PipelineOptionsFactory
import org.apache.beam.sdk.options.SdkHarnessOptions
import org.wfanet.measurement.api.v2alpha.CanonicalExchangeStepAttemptKey

this didn't exist in 0.4

[stevenwarejones]

Reviewable status: all files reviewed, 1 unresolved discussion (waiting on @jonmolle)

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src/main/kotlin/org/wfanet/panelmatch/client/tools/BeamJobsMain.kt line 28 at r1 (raw file):

Previously, stevenwarejones (Steven Ware Jones) wrote…

this didn't exist in 0.4

you'll need to use just ExchangeDateKey here instead.

[stevenwarejones]

Reviewable status: 1 of 2 files reviewed, all discussions resolved (waiting on @SanjayVas)

[SanjayVas]

Reviewed 1 of 1 files at r2, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @jonmolle)

[jonmolle]

Reviewable status: 1 of 2 files reviewed, all discussions resolved (waiting on @SanjayVas)

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src/main/kotlin/org/wfanet/panelmatch/client/tools/BeamJobsMain.kt line 28 at r1 (raw file):

Previously, stevenwarejones (Steven Ware Jones) wrote…

you'll need to use just ExchangeDateKey here instead.

Yeah, exchangestepattemptkey, but same idea

[stevenwarejones]

Reviewed 1 of 2 files at r1, 1 of 1 files at r4, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @jonmolle)

[stevenwarejones]

i don't think this is needed any more.

Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @jonmolle)