teleport: gramine (libOS) enclave

a trusted execution environment for storing authentication and authorization material

built on intel SGX trust assumptions 🦀

#current measurment:

Attributes:
    mr_signer: 319b7b881dc9b5a77cb8276baa6921c93caee686273c97a3343fc72db813f8a2
    mr_enclave: 5bd584c9d3c1c6646329605218a7a2036ed9818b2754da7a4d2d4436d35d61c5
    isv_prod_id: 0
    isv_svn: 0
    debug_enclave: True