C#: Fix missing BOP_INTEGER_PROGRAMMING Enum
C#: Fix missing BOP_INTEGER_PROGRAMMING Enum

or-tools/or-tools,google/or-tools,google/or-tools,or-tools/or-tools,or-tools/or-tools,or-tools/or-tools,google/or-tools,google/or-tools,google/or-tools,or-tools/or-tools,or-tools/or-tools,google/or-tools