Ctor-based add() API, font by string, asset by string in Ctor
- Change Node::add
(args) to add(Ctor{}, args) using Ctor::T alias - All node Ctor structs now carry using T = NodeType for type deduction
- Separate node-specific Ctor from positional Node3d/NodeUi::Ctor args
- Mesh::Ctor and SkMesh::Ctor now take asset as string
- Label::Ctor and MenuItem::Ctor now take font as string
- FpsLabel no longer requires Font reference in constructor
- BaseSlot::Ctor separated from Slot::Ctor with NodeUi::Ctor as arg
- InvUi::Ctor carries Items reference instead of passing via constructor
- All node registrators updated to use new add(Ctor{}) pattern
- Fix TileView scroll max: use (size-1)/nCol instead of (size-nCol+1)/nCol
- Update all slot, loot, player, mob constructors to new pattern
- Update icon assets for equipment and weapon slots