Minimal build documentation does not include all important limitations

Is your feature request related to a problem? Please describe.
Official documentation on Minimal build is found exclusively here. The documentation lists some limitations of minimal build but doesn't mention that it disables avx512 instructions (see implementation here) - which is important for users to be aware.

For instance, on a x86_64 platform that has avx512, disabling the use avx512 instructions brings down inference performance up to 47% on sample models. I'd like to know what other features minimal build disables that is not listed in its documentation, but could impact inference latency.

System information

• ONNX Runtime version (you are using): 1.11.0

Describe the solution you'd like
Update the documentation with all limitations whether it's low- or high- level. This way, users can make informed judgement on whether to use minimal build or not without searching all occurrence of defined(ORT_MINIMAL_BUILD) in code base.

Describe alternatives you've considered
Manually search all occurrences of defined(ORT_MINIMAL_BUILD) in source code to understand what will be disabled for minimal build.

Additional context
n/a

Start with the Minimal build documentation at custom.html#minimal-build and review the linked platform.cpp implementation. Search the source for defined(ORT_MINIMAL_BUILD) to identify limitations that affect users, including AVX512 behavior. Done means documenting the relevant low- and high-level limitations so users can judge the build’s inference impact without manually searching the code.