fix(common): missing type def to support promises for class modules

[micalevisk]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/nestjs/nest/blob/master/CONTRIBUTING.md
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Other... Please describe:

What is the current behavior?

if we have a promise resolving to a class-based nestjs module in the imports array, we will se a compilation error:

What is the new behavior?

it seems that this is supported already but the type definition for that imports array is not correct. So I just fixed the type def.

Does this PR introduce a breaking change?

• Yes
• No

[coveralls]

Pull Request Test Coverage Report for Build 8334a7ed-4079-4174-a83c-6194b508af8c

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 92.243%

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Totals
Change from base Build 72f148bc-4145-44b3-a3c4-06a616307114:	0.0%
Covered Lines:	6754
Relevant Lines:	7322

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💛 - Coveralls

[kamilmysliwiec]

Is that something we should be supporting though? I mean, even though this doesn't lead to a runtime error, it doesn't necessarily have a valid use-case.