--recent flag for annotate

**What is the problem you're trying to solve**

Wondering if you folks are open to a contribution which adds the `--recent` flag to `annotate`.
Annotate images that were pushed to the ACR within the last 24hrs.

Was thinking of using `--ago` naming for the flag here as well, but that runs counter to the purge command where all images > 1d are purged.

Our usecase is as follows:

We'd like to annotate all images pushed to our acr with a cron job.
I'm aware the book method of annotating images at push time is not a cron, but a ACR webhooks + serverless functions.
It's really heavy on infra & management overhead, which is why we'd rather go with a cron job.

We currently do this manually using oras & az cli, but would rather have 1 tool to do the annotation.

**Describe the solution you'd like**
A clear and concise description of what you want to happen.

**Additional context**
Add any other context or screenshots about the feature request here.