feat(graphql): migrate to type-graphql 2.0.0-rc.2

[lchudinov]

[graphql] Migrate GraphQL Extension to type-graphql v2.0.0-rc.2

The GraphQL extension currently uses type-graphql version 2.0.0-beta.2.
This PR migrates the extension to the latest release candidate, 2.0.0-rc.2.

Checklist

• DCO (Developer Certificate of Origin) signed in all commits
• npm test passes on your machine
• New tests added or existing tests modified to cover all changes
• Code conforms with the style guide
• Affected example projects in examples/* were updated

[coveralls]

Pull Request Test Coverage Report for Build 21538622890

Details

• 9 of 9 (100.0%) changed or added relevant lines in 5 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.005%) to 54.852%

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Totals
Change from base Build 21489675365:	0.005%
Covered Lines:	9573
Relevant Lines:	12457

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💛 - Coveralls

[lchudinov]

Hi @dhmlau, Could you please review this PR?

[dhmlau]

@lchudinov, thanks for the PR. The changes look reasonable to me. I'm not familiar with this extension, so it would be ideal to have at least one more review before we land this PR.

Also, I have a question about one file. Thanks.

[lchudinov]

@dhmlau, Thanks for your approval. Could you please add a reviewer who is familiar with the extension?

[dhmlau]

@lchudinov , @raymondfeng is listed as codeowner for this extension.
I'm going to publish a release for all the LB4 modules next week. How about we wait till that time and merge it if we don't get more reviews?

[lchudinov]

@dhmlau Sure, I agree. Waiting until next week sounds good.

[dhmlau]

@lchudinov, thanks again for your contribution. Your PR has been merged! 🎉