Proper forwarding of trivial, noexcept and explicit properties in C++ Optional

## Brief feature description

Ensure that all cases in which a trivial, explicit, or noexcept property from an enclosed type `T` is also mandated from the enclosing `optional` by the C++ ISO standard are properly supported by the iceoryx2-bb-cxx `Optional` type.

## Detailed information

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Start by locating the iceoryx2-bb-cxx Optional type and reviewing its current constructors and special-member behavior against the C++ ISO requirements for an enclosed type T. Done means every mandated trivial, explicit, and noexcept property is correctly forwarded from T to optional, with tests covering the relevant cases.

Written by the indexing model from the issue text.