Update RaceChocoboManager

[mabako]

No description provided.

[Haselnussbomber]

We don't really like to see helpers implemented in C# in CS, so I've replaced them with native functions where possible and also made use of our new bit field generator.

Attribute values can be read like this:

var attributes = new RaceChocoboAttributeValues();

manager->GetAttributesCurrent(&attributes);

ImGui.Text("Current Attributes:");
using (ImRaii.PushIndent())
{
    ImGui.Text($"MaximumSpeed: {attributes.MaximumSpeed}");
    ImGui.Text($"Acceleration: {attributes.Acceleration}");
    ImGui.Text($"Endurance: {attributes.Endurance}");
    ImGui.Text($"Stamina: {attributes.Stamina}");
    ImGui.Text($"Cunning: {attributes.Cunning}");
}

manager->GetAttributesMaximum(&attributes);

ImGui.Text("Maximum Attributes:");
using (ImRaii.PushIndent())
{
    ImGui.Text($"MaximumSpeed: {attributes.MaximumSpeed}");
    ImGui.Text($"Acceleration: {attributes.Acceleration}");
    ImGui.Text($"Endurance: {attributes.Endurance}");
    ImGui.Text($"Stamina: {attributes.Stamina}");
    ImGui.Text($"Cunning: {attributes.Cunning}");
}

manager->GetAttributesStars(&attributes);

ImGui.Text("Attributes Stars:");
using (ImRaii.PushIndent())
{
    ImGui.Text($"MaximumSpeed: {attributes.MaximumSpeed + 1}");
    ImGui.Text($"Acceleration: {attributes.Acceleration + 1}");
    ImGui.Text($"Endurance: {attributes.Endurance + 1}");
    ImGui.Text($"Stamina: {attributes.Stamina + 1}");
    ImGui.Text($"Cunning: {attributes.Cunning + 1}");
}

My chocobo has all attributes on 2 stars, so I'm not 100% sure on that part.
I'll leave the PR open for you and/or others to check.