nitro-cli describe-enclaves not accurate in debug mode

When starting an enclave in debug mode, the `nitro-cli describe-enclaves` command prints out the PCR's the enclave is supposed to have based on image creation, instead of the full 0 values which it has in debug mode. I realize that the full 0 values are mentioned in the official documentation, but the command itself is actively misleading when used on debug mode enclaves.

I suggest adding a check which changes the PCR's to the special full 0 values if a given enclave is in debug mode.

Start by tracing the nitro-cli describe-enclaves command's output handling and how it identifies debug-mode enclaves. Verify the current PCR values against a debug enclave, then confirm that the command reports full zero values for debug mode without changing non-debug output.

Written by the indexing model from the issue text.