Detect whether the host has a certain ability

I most recently saw this project https://github.com/bytecodealliance/WASI-Virt

This is very useful, but I now have a question about the interface provided by the host.

Does the host must to implement all interfaces specified in the final phase of wasi?

Considering that the performance of some embedded devices is very weak, it is unlikely to implement overly complex interfaces, such as wasi-nn.

Should an interface be provided to query whether the host actually implements a certain interface?
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If not all interface must be implemented, I hope to be able to query the following status of the interface:

enum {
    // It is forbidden to call this interface (trap immediately)
    // for example, not implemented
    deny,
    // Allow calling this interface
    allow,
    // This interface does not actually exist, but it can be called without trap, and the behavior does not comply with the operation.
    // for example, random numbers always return 0(default value).
    // stdout will not actually produce any message. 
    // http requests will not actually be issued, etc.
    virtual, 
    // The interface exists, but there is no calling permission (trap immediately)
    // for example, if the user has not been granted permission to view the file, you should ask the user to check the pop-up window first.
    insufficient-permissions
}

Begin by reading the linked WASI-Virt project and the WASI final-phase interface context, including wasi-nn. Compare the proposed deny, allow, virtual, and insufficient-permissions states; done means deciding whether a host capability query belongs in the component-model specification and documenting its semantics.