Added Minimum Spanning Trees Algorithm

[rajatkhanna1999]

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Description

Added folder name Minimum Spanning trees

For Example:

• Added a file(s) 'kruskal.cpp' and 'prims.cpp' that implements MST.

Related Issue

Kruskals Algorithm for minimum spanning Trees(c++) Issue #408 This project only accepts pull requests related to open issues. Please link to the issue here:

Types of changes

What types of changes does your code introduce? Put an x in all the boxes that apply:

• [ ] Bug fix (change which fixes an issue with the algorithm)

• [ x] New Algorithm (non-breaking change which adds functionality)

• [ ] Documentation

Checklist:

Go over all the following points, and put an x in all the boxes that apply.

If you're unsure about any of these, don't hesitate to ask. We're here to help!

• [ ] My code follows the code style of this project.

• [ ] My change requires a change to the documentation.

• [ ] I have updated the documentation accordingly.

• [ ] I have read the CONTRIBUTING document.