Guppy for H2 documentation ("spec sheet")

[trvto]

• Add to hugr-qir repo docs
• Later should be available from a Nexus docs page

[trvto]

This doc should be a table that lists guppy features and their degree of support when submitting to H2 using hugr-qir

[cqc-melf]

add a table with guppy functions to show which is supported by H2 and which is not

[cqc-melf]

include https://github.com/quantinuum-dev/nexus-docs/blob/melf/update-hugr-qir-notbeook/docs/source/trainings/notebooks/basics/qir/guppy_to_qir.ipynb

[cqc-melf]

Table similar to https://docs.quantinuum.com/nexus/trainings/notebooks/basics/qir/index.html#platform-specifications