k-orthogonal, triorthogonal: asymptotically good constructions (arXiv:2609.08203)

[RodrigoSanJose]

Adds results from arXiv:2609.08203 to the k-orthogonal and triorthogonal entries.

New Codes:

None.

Modified Codes:

k-orthogonal code:

• added transversal-gate features: explicit asymptotically good binary $h$-orthogonal CSS codes where strongly transversal $R_h$, followed by a diagonal correction from level $h-1$ of the Clifford hierarchy, implements logical $R_h$ (Cor. 5.6), and $2^{h-1}$-orthogonal ones that need no correction (Cor. 6.7)

Triorthogonal code:

• added a rate feature: asymptotically good families of binary triorthogonal codes exist

Also added myself to users/users_db.yml.

Checklist:

I remembered to:

• Include relevant citations I could think of (with \cite{...})

• Create links to the other referenced codes (with
  \hyperref[code:...]{...})

• Update the relevant meta changelog fields with my user_id (see
  users/users_db.yml; add yourself in the PR if you aren't there already)