Add support for different inputs to wil::reg::set_value_binary

I'd like to be able to pass data in formats other than std::vector<uint8_t> as input to binary registry data.

While I can write this

wil::reg::set_value_binary(HKEY_CURRENT_USER, L"Value", REG_BINARY, std::vector<uint8_t>{1, 2, 3});

This is not supported

    struct MyData
    {
        int a;
        int b;
    };
    wil::reg::set_value_binary(HKEY_CURRENT_USER, L"Value", REG_BINARY, std::vector<MyData>{{1, 2}, {3, 4}});

I'd also like to be able to do this.

    struct POD { int a; int b; };
    POD pod{};
    wil::reg::set_value_binary(HKEY_CURRENT_USER, L"Value", REG_BINARY, pod);

or some support void*/size_t as the input.

Start by locating wil::reg::set_value_binary and any tests covering binary registry data. Review how its current std::vector<uint8_t> input is handled, then define and test support for vector, a POD value, or void*/size_t as described; done means the requested inputs can write REG_BINARY data correctly.