Add blog entry on Flash

[czgdp1807]

Describe the bug/feature

Recently, Google has decided to phase out Flash by December 2020. It will be great to have a blog entyr describing the rise of Flash and then it's decline. Who started it? How it became popular and then why it started going out of the market.

To Reproduce(for bug)

Screenshots(for bug)

Device Details(for bug)

Other Comments

Refer,
[1] https://www.blog.google/products/chrome/saying-goodbye-flash-chrome/
[2] https://en.wikipedia.org/wiki/Adobe_Flash_Player ( Pick the important points)

ping @anukritijha246