Release and packaging for SEV-SNP

[jumaffre]

• Change COMPILE_TARGETS to support one target at a time Change COMPILE_TARGETS to take a single target, including SNP #4367
• Add snp as an option to COMPILE_TARGET Change COMPILE_TARGETS to take a single target, including SNP #4367
• Refactor attestation code to use compile time option instead of runtime.
• Decorate binaries with .snp for snp COMPILE_TARGET Decorate and identify SNP libraries #4569
• Separate containers to be per target (sgx, snp, insecure virtual) Container images release improvements for 3.0.0 #4381
  • a. Create SNP and virtual versions of ccf/app/dev, ccf/app/run and ccf/app/run-js containers Container images release improvements for 3.0.0 #4381
  • b. Create SNP and virtual versions of ccf/ci/ containers Publish new per target platform CI docker images #4461
• Separate .deb files to be per target Change COMPILE_TARGETS to take a single target, including SNP #4367
• Include platform type in project name

[DomAyre]

It's also worth noting we should probably update the sample constitutions to allow operators to manage the tables used in SNP attestation

[achamayou]

@DomAyre I think we've done most of that, except perhaps the binary decoration? I think we want to close this before 3.0 final, and so this effectively should become p0.