[room database] use withTransaction androidx extension method

[satoshun]

Overview (Required)

• withTransaction method handles Coroutine and Transaction appropriately. I think, withTransaction extension method better than current approach.

Links

• https://developer.android.com/reference/kotlin/androidx/room/package-summary#withtransaction

Screenshot

Before	After

[jmatsu-bot]

Your apk has been deployed to https://deploygate.com/distributions/eb1507c7cd86164341dc4f21f34539cb3ffed1e3. Anyone can try your changes via the link.

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[jmatsu-bot]

No issue was reported. Cool!

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[takahirom]

Looks good!!! Thanks!!