feat(): add compare target prototype equal to inheritance property

[namhhitvn]

PR Checklist

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• The commit message follows our guidelines: https://github.com/nestjs/nest/blob/master/CONTRIBUTING.md
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PR Type

What kind of change does this PR introduce?

[ ] Bugfix
[x] 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: #1018

What is the new behavior?

The Schema can inheritance property another class

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

[kamilmysliwiec]

We might need to loop through prototypes here (to fully support the inheritance). The current solution looks like a workaround that won't work for longer inheritance chains.

[namhhitvn]

This works for longer inheritance chains because this function is applied to filter to get metadata properties of schemas.

Function reference:
https://github.com/nestjs/mongoose/blob/HEAD/lib/storages/type-metadata.storage.ts#L23-L29

[kamilmysliwiec]

LGTM