Parametric cube balance piece generator

🎮 What This IsThis project takes inspiration from the balance cube games. Instead of just the seven original tetrominoes, here you can design new, custom pieces by describing them with simple text strings. Each string defines which squares of a grid are filled and which are empty. The system then turns that text into a parametric 3D block. 📝 Tutorial: How to Make StringsThe string format is simple and human‑readable:Characters:Any non‑space character (like x, #, *) = filled square.A space “ “ or period ”.” = empty square.Rows:Each row is separated by a comma (",").Layers:Each layer (for 3D stacking) is separated by a pipe ("|").Examples1. Square (O piece)xx|xx→ 2×2 block. 2. Line (I piece)xxxx→ 4×1 block. 3. L piecex|xxx→ L‑shaped block. 4. T piecexxx|.x.|.x.orxxx|.x|.x→ T‑shaped block. 5. Cube (two stacked layers)xx,xx|xx,xx→ A 2×2×2 cube. 6. Custom shape (Y‑like)x.x|xxx|.x|.x7. Big Oxxxxx|x...x|x...x|x...x|xxxxx→ O shaped block. Formatting RulesUse spaces or periods