Add Tutorial for Matrix Operations Handling

[khoinguyyyen]

Adding tutorial involving matrix multiplication
resolves #6963

This example demonstrates handling memory spaces and utilizing parallel computation for a matrix-matrix multiplication operation
Includes Makefile and CMakeLists.txt

[crtrott]

Hi,

thanks for the contribution. Generally in tutorials we are trying to have a specific educational thing we want to convey. In the existing memory space tutorial we are introducing the host mirror mechanism. This example does the same thing for a different type of kernel (matrix multiply). However, the title seems to indicate that the example wants to teach something about matrix multiply? But the kernel is not how we would recommend even a simple one. So the question is what is the intended takeaway from this example compared to the existing one.

[ajpowelsnl]

Hi @khoinguyyyen -- does your tutorial provide concepts beyond those in the matrix - vector multiply example (using HostMirror)? If not, may we close this PR?