Make the mono interpreter into a runtime component

[lambdageek]

Continuing our work on using a uniform mechanism to componentize the mono runtime, we should consider turning the interpreter into a runtime component.

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Use case: iOS Device runtime pack should include libmono-ee-interp.a

In mono/mono, we built the interpreter for iOS devices as a separate static library that could be excluded from the build.

In dotnet/runtime we built the interpreter right into libmono.a for iOS device runtime packs. This leads to a size increase for the common case where published iOS apps use FullAOT and don't need the interpreter fallback.

We should use the CMake ENABLE_INTERP_LIB option for iOS device runtime packs. (We currently use it for wasm)

[lambdageek]

/cc @imhameed @spouliot

[lateralusX]

@lambdageek, maybe we should convert interpreter into a component, like we have for tracing, debugger and hot reload instead of continuing with special static library solution? If we agree on that, then maybe we should re-phrase this issue and move it to net8.