From a Möbius-aromatic interlocked Mn<sub>2</sub>B<sub>10</sub>H<sub>10</sub> wheel to the metal-doped boranaphthalenes M<sub>2</sub>@B<sub>10</sub>H<sub>8</sub> and M<sub>2</sub>B<sub>5</sub> 2D-sheets (M = Mn and Fe): a molecules to materials continuum using DFT studies