A little bit of criticism.
Code below won't compile out of the box:

namespace test {
    struct Test;
}

namespace test {
    struct Test : Moveable<Test> {

        Vector<Test> children;
    };
}

Adding of

template <> inline constexpr bool is_upp_guest<test::Test> = true;

won't help.
You need to add

template <> inline constexpr bool is_trivially_relocatable<test::Test> = true;

All this stuff is inconvenient and unnatural.

And I have no idea how to make code below compile.

struct Test01;

struct Test01 {

    struct Test02 : Moveable<Test02> {

        Vector<Test02> children;
    };
};