A Facile and Effective Synthesis of α‐(1→6)‐Linked Mannose Di‐, Tri‐, Tetra‐, Hexa‐, Octa‐, and Dodecasaccharides, and β‐(1→6)‐Linked Glucose Di‐, Tri‐, Tetra‐, Hexa‐, and Octasaccharides Using Sugar Trichloroacetimidates as the Donors and Unprotected or Partially Protected Glycosides as the Accepto