DOC: Add Managing multiple python environments with conda Blog

[bhavukkalra]

While browsing over the page for conda documentation requirements. I stumbled upon this comment

Write at least one blog post on a conda-related topic

The most frequent use that I make of conda is its ability to manage multiple python environments.

• Giving Precise control over, what specific version of python is desired
• Seamless switching amongst all the environments

These are the two main points that I have tried to capture (amongst the others) in this very concise blog.

EXTRA- [I have used an external Copyright free Image from Pixabay for the blog - Given appropriate credits]

Snippets -