Feature: find keys in arguments of pipes

[Serrulien]

Is there an existing issue for this?

No

• I have searched the existing issues

Is your feature request related to a problem? Please describe

I frequently use the transloco pipe inside arguments of another pipe:

{{ var | pipe : ( 'key' | transloco ) }}
{{ var | pipe : ({ foo: 'key' | transloco }) | another }}

In v3.1.1, translation keys in pipes' args are not detected by the keys manager. I would like them to be detected.

I would like to make a pull request for this feature

Yes 🚀

[shaharkazaz]

Waiting to see your PR for it 😉