Add support for AMD SEV-SNP through nilCC

[jimouris]

Add support for AMD attestations.

Note, the input (hex) is similar to the TDX ones so I added a new field "type": "amd", or "type": "intel", to differentiate between the two.

[jimouris]

Example for testing:

curl -X POST "http://localhost:3000/attestations/verify" \
  -H "Content-Type: application/json" \
  -d '{
    "type": "amd",
    "hex": "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"
  }'

returns

{"success":true,"proof_of_cloud":true,"quote":{"header":{"tee_type":"TEE_AMD_SEV_SNP"}},"chip_id":"8371db1617345c6be1c18fae78de9044bab30d6014cc266f2a9939379f2d46aab0ff39f5ca6a30c5fbcf8b03e2f72c77cfbe26c05a42e0c6488878a46225a8e0"}%

[h4x3rotab]

LGTM. Leaving a TODO to add hardware id check locally in this repo