feat(common)!: type narrowing allowed injection tokens for @Inject()

[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?

we can pass anything to @Inject() decorator factory

What is the new behavior?

now we can only pass injection tokens (same type for provide on custom providers)

Does this PR introduce a breaking change?

• Yes
• No

Other information

[coveralls]

Pull Request Test Coverage Report for Build d82035ec-2bea-47c6-8b34-fa7bc99f4aea

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 92.26%

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Totals
Change from base Build e7c88d17-2198-4c13-b01a-98aa728736b6:	0.0%
Covered Lines:	6687
Relevant Lines:	7248

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💛 - Coveralls

[Tony133]