feat(frontend-python): simulate encrypt run decrypt option

[umut-sahin]

(closes https://github.com/zama-ai/concrete-internal/issues/734)

[bcm-at-zama]

I should not be the only reviewer, adding @BourgerieQuentin eg

[bcm-at-zama]

Looks good to me, but:

• I would prefer another tech person from Concrete to have a look
• I think we should have a test to check it's really done in simulation (for now, the test just checks it works)

[BourgerieQuentin]

Look good to me, but that's really extremely dangerous as we have the same path for unencrypted and encrypted execution.
Should be added to the documentation.

[umut-sahin]

I've updated the documentation.

[bcm-at-zama]

Look good to me, but that's really extremely dangerous as we have the same path for unencrypted and encrypted execution. Should be added to the documentation.

We mentioned in slack (https://zama-ai.slack.com/archives/C0455QDGT6C/p1718354251437129?thread_ts=1718196499.461079&cid=C0455QDGT6C and thread) that the dangerous option can't be used in deployment so nothing bad can happen

[bcm-at-zama]

Thanks for the updates. I challenge a bit the doc here, and also, feel free to resolve them, but I would have more comments, eg in test files to explain why you do that

[umut-sahin]

Done!

[bcm-at-zama]

Awesome!