Ortho-chalcogenostannates as ligands: Syntheses, crystal structures, electronic properties, and magnetism of novel compounds containing ternary anionic substructures [M$_4$([$\mu_4$-Se)(SnSe$_4$)$_4$]$^{10-}$ (M = Mn, Zn, Cd, Hg), $^3_{\infty}${[Hg$_4$($\mu_4$-Se)(SnSe$_4_)$_3$]$^{6-}$}, or $^1_{\infty}${[HgSnSe$_4$]$^{2-}$}