rust: disable scripts

[Riolku]

Rust doesn't need the single file header. In the interest of keeping the
crate size small, I've simply added a flag that disables generation of
the single file header. The single file header still builds by default.

Additionally, Rust shouldn't use the automatic grammar generation. I've
also disabled that in the crate build.

[Riolku]

Running https://github.com/kuzudb/kuzu/actions/runs/7102769568.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (a00a72a) 92.85% compared to head (9adba6c) 92.86%.
Report is 3 commits behind head on master.

❗ Current head 9adba6c differs from pull request most recent head f1dd6b6. Consider uploading reports for the commit f1dd6b6 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2550   +/-   ##
=======================================
  Coverage   92.85%   92.86%           
=======================================
  Files        1025     1025           
  Lines       38324    38324           
=======================================
+ Hits        35586    35589    +3     
+ Misses       2738     2735    -3     

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[Riolku]

https://github.com/kuzudb/kuzu/actions/runs/7103200767 now runs.

[benjaminwinger]

Should we mention that this requires python in the description?

And while it's not entirely related, the Building from Source docs still say that python headers are needed, while that should only be necessary if building the python API and could be moved to an API-specific dependency.
Strictly speaking this change will also mean that python itself is entirely optional, but maybe it's easier to still say that python is required, since usually people will want the single file header, than it would be to explain the conditions where it is required.

[Riolku]

Re: python dev headers, the docs just need to be redeployed (kuzudb/kuzu-docs#48 was merged).