Port to C++ : Assignments related to PIXELS seminar

[meshtag]

Is your feature request related to a problem? Please describe.
This feature request is created to keep a record of porting and potential addition of new assignments related to the seminar in C++ as discussed in this thread.

Describe the solution you'd like

• Create a separate main folder for containing all assignments. Individual assignments related to specific topics might be grouped together inside the main parent folder of assignments.
• You might chose to add reference links in individual questions, which may provide additional material on a related topic for that question (this is suggested solely for the purpose of providing more (potentially real world) info related to the topic asked in original question and hence, should not in any way lead to the solution).

[amanchhaparia]

@Aryan-karawale, kindly put a updated PR for Playing with images assignment