Add Tips and Tricks

[hemant2132]

What?
Be the first one to share your tips and tricks here! 😄

Tasks:

• First of all, we require a separate folder - "Tips and Tricks".
• Add a markdown file with your name and add your tips and tricks.
  The content should be focused on CP and can range from general problem solving strategies to the recommended coding-setup.
• Update the README file. It should convey to everyone that how they can contribute to this repo through this.

Additional Notes:

• You may create a subfolder instead of the markdown file.
• Link your PR with this issue.

Attribution:
USACO/Resources - Benq
How to practice? · Errichto
GaurangTandon/CPtools