Group creation for Context Project

First work on group matching for Contextproject:

• Create groups based on friends list
• Find solution for friends lists that do not match
• Create a graph of groups on the left and projects on the right and connect them with weighted edges, where the weight indicates how much a group wants a project
• Calculate the edge weight from the average of all project preferences of the group members
• Run the Max Flow algorithm
• Take the results and save the groups with their desired project
• Ensure projects can have multiple groups at once

Used library for max flow algorithm: https://github.com/pH14/graphmatch