adding ntruhps40961229

[baentsch]

Fixes #1031

Fixes copy_from_upstream templating for algorithms with only one implementation.

• Does this PR change the input/output behaviour of a cryptographic algorithm (i.e., does it change known answer test values)? (If so, a version bump will be required from x.y.z to x.(y+1).0.)
• Does this PR change the the list of algorithms available -- either adding, removing, or renaming? (If so, PRs in OQS-OpenSSL, OQS-BoringSSL, and OQS-OpenSSH will also be required by the time this is merged.)

open-quantum-safe/openssl#336
open-quantum-safe/boringssl#79

[baentsch]

@Martyrshot FYI, this also contains a little update to the jinja2 templating, so I'd strongly suggest working off this branch when resolving #1122. As open-quantum-safe/openssl#336 builds and tests OK locally, I'd consider merging #1126 no serious risk for the downstreams.

[dstebila]

Looks good. However I realize that the issue that prompted this was actually misnamed, as it only mentioned NTRU-HPS-4096-1229, but should have referred to both new level 5 schemes added in PQClean/PQClean#427, including NTRU-HRSS-1373. Do you want to merge this one quickly and then do a follow up with HRSS-1373, or amend this one?

[baentsch]

Do you want to merge this one quickly and then do a follow up with HRSS-1373, or amend this one?

The latter. Please feel free to check again and merge if OK (& all tests passed).