Add Cmatrix

[Dharmateja176]

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Types of Changes

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• New addition to list
• Fixing bug in existing item in list
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Proposed Changes

CMatrix is based on the screensaver from The Matrix website. It shows text flying in and out in a terminal like as seen in "The Matrix" movie. It can scroll lines all at the same rate or asynchronously and at a user-defined speed.

PR Checklist

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• I have read the CONTRIBUTING guide
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Further Comments

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[Tejashwini176]

@jaywcjlove Merge this tool.