FR to implement tpm2_duplicate capability which will allow sealed transfer of tpm based keys

Here is a sequence using tpm2_tools: Duplicating Objects

for ref, the

  -  TPM2_CC_Duplicate constant value is   0x14b from tpm2_tools command-code-,mappings for constants.go

but the larger thing that remains is implementing tpm2_duplicate

eg

tpm2_duplicate -C new_parent.ctx -c key.ctx -G null -p "session:session.dat" -r dup.dup -s dup.seed