Function cfm_tc_dkg_output_share 

#[unsafe(no_mangle)]
pub extern "C" fn cfm_tc_dkg_output_share(
    session: *mut FFITcSession,
    share_out: *mut *mut CFMTcShare,
    public_key_out: *mut u8,
    pk_max: u32,
    pk_len: *mut u32,
) -> u32

For DKG sessions: extract the per-party share and the shared public key.

• share_out: set to a heap-allocated CFMTcShare; free with cfm_tc_share_destroy.
• public_key_out / pk_max / pk_len: shared public key bytes.