[wasm][debugger] Separate public, private and internal structure properties

Group the getProperties response to match the *return object* structure from [doc](https://chromedevtools.github.io/devtools-protocol/tot/Runtime/#method-getProperties) for structures.

result - public fields and accessors (get / set)
internalProperties - internal fields
privateProperties - private fields

For objects it was solved in [#62627](https://github.com/dotnet/runtime/pull/62627).
