Flamingo priority and uninstalls

[Fernthedev]

Depends on sc2ad/Flamingo#11

    // new Hook API!
    modloader::ModInfo chroma = { "chroma", "1.0.0", 0 };
    auto hook = FLAMINGO_HOOK(il2cpp_utils::Logger, test2_hook).after(chroma).before("test-mod").install();

    if (false) {
        // uninstall the hook, which will also remove it from flamingo
        // hook is now invalid after this call
        auto builder = hook.uninstall().get_result();

        builder.after("another-mod").before("test-mod-2").final();
        // reinstall the hook
        hook = builder.install();
    }

[sc2ad]

Need pragma once

[sc2ad]

Why condition this out? Compiler could optimize this out and theoretically avoid even linting this