bringing back the `--inject-file` flag in `op`?

Hi there. Was curious if there is a plan to land the --inject-file flag that was mentioned in the v2.30.0-beta.02 https://app-updates.agilebits.com/product_history/CLI2#v2300002? A built-in way to create a temporary FIFO would be nice! I'm aware I can use command substitution (<(op read ...) or =(op read...) depending on the need) but was still looking forward to this option.

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