fix(express): remove body-parser types and ship these types our own

[tolgap]

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?

Issue Number: #11302

We were depending on @types/body-parser in this new feature, as body-parser does not ship its own types. But this breaks when using skipLibsCheck: false in tsconfig.json.

What is the new behavior?

I moved the @types/body-parser interface we use over to @nestjs/platform-express. We already have our own NestExpressBodyParserOptions which we can use to type ourselves. So this should not be a breaking change.

Does this PR introduce a breaking change?

• Yes
• No

Other information

[coveralls]

Pull Request Test Coverage Report for Build 5413841e-9fdb-43a9-81cf-857df98894a3

• 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 92.656%

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Totals
Change from base Build 1b9ff98a-aca7-47dd-a30c-9bc9d5c1bf4e:	0.0%
Covered Lines:	6498
Relevant Lines:	7013

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💛 - Coveralls