feat: add the ability to directly encrypt a specified FILE into OUTPUT in the current directory

[Rexcrazy804]

This enables agenix to leverage the ability to encrypt/decrypt more than just plain text data. I haven't done any sort of rigorous testing (besides testing it with my own config) YET but I plan on doing so. Any advice regarding the same is welcome.

That said, I am uncertain whether this still falls in the scope of "secrets" deployment, so I am open to discuss this further or render this pr as beyond the scope of the project.

[Rexcrazy804]

forgot to mention that the file name must be explicitly specified using the age.secrets.${secretname}.name attribute to include the file format for non raw text files.

eg: "John.png"

[Rexcrazy804]

@n8henrie it seems I have forgotten to request reviews on this one and I don't think I am able to add reviewers now so could I have your thoughts on this pr?

[n8henrie]

You should be able to request reviewers (top right in my interface).

Can you give an example use case for this feature? (I'm sure I could come up with something, but curious about your plan.)

Definitely would need some tests -- ideally demonstrating an example real-world use.

[Rexcrazy804]

You should be able to request reviewers (top right in my interface).

Unfortunately there doesn't seem to be anything clickable to particularly request reviewers, perhaps there's something wrong on my end.

Can you give an example use case for this feature? (I'm sure I could come up with something, but curious about your plan.)

I am currently using it for declaratively deploying wallpapers (specifically ones with friends and family) that I cannot expose unencrypted to a public repository, this pr lets me do just that.