Data Type - Matrix

[npruehs]

Implement an immutable Matrix struct in the Core folder.

• Write a struct summary comment.
• Add the CLSCompliant attribute.
• Implement IEquatable
• Implement Equals and GetHashCode.
• Implement equality operator overloads.
• Implement ToString.
• Provide static readonly fields for the zero and identity matrix.
• Provide the inverse of the matrix.
• Provide the transpose of the matrix.
• Implement matrix-matrix multiplication.
• Implement matrix-vector multiplication.