add field deprecatedReason in inputType options for deprecating input…

[Dev-cmyser]

… fields

PR Checklist

Please check if your PR fulfills the following requirements:

• [x] 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
• [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: N/A

What is the new behavior?

Does this PR introduce a breaking change?

• [ ] Yes
• [ ] No

Other information

[Dev-cmyser]

hi i would like to add this feature in this library

pleade tag me for rewiew, thanks!

[kamilmysliwiec]

Could you add corresponding tests too?

[Dev-cmyser]

Could you add corresponding tests too?

yes i could At least I'll try

[Dev-cmyser]

it's hard)

[Dev-cmyser]

I'll try in some future sgain