Print generated VC from CLI command

[kziemianek]

resolves: P-177

• Prints out generated VC.
• perform_trusted_operation allows to specify the type of the TrustedOpResult::Ok variant, so no additional decoding is needed.
• fixes aes_decrypt function - result of open_in_place should be returned as it doesn't containt the tag

[linear]

P-177 Print the result to stdout for `request-vc` CLI

A follow-up issue of P-166

Currently the CLI only returns the top status, see tee-worker/cli/src/trusted_operation.rs. As a result, you could only view the VC from the logs.

As we support synchronous DI response, it should be possible to print the result directly to stdout, either the generated VC, or any emitted error.

It's split into two issues (PRs) for better readability.

[wli-pro]

I wasn't sure now how did my test before (without this commit in this PR) even work: #2248 (see the cli test results in the PR...)

[wli-pro]

But this would be very helpful for testing, before this I used to need to get the VC from explorer

[kziemianek]

I wasn't sure now how did my test before (without this commit in this PR) even work: #2248 (see the cli test results in the PR...)

You can find VC content in worker logs.
As a CLI user you probably won't have access to logs + production build doesn't log such information.

[Kailai-Wang]

Looks good, thanks!

Integirtee might be interested in perform_trusted_operation change too

[BillyWooo]

LGTM

[kziemianek]

@felixfaisal fyi