Optimise extension + Change all of the code

[SenpaiHunters]

Whole extension changes:

Refer to my comment on issue #1 .

• Changed CSS styles into its own file
• Changed JS, background.js and popup.js into its own JS location
• Changed hello.html to popup.html to align with Chromium dev docs
• Optimise both background.js and popup.js
• Added support for Ecosia
• Optimise all images, and removed the second appended image inside the original folder
• Updated the formatting on all of the code
• Added a default lang to the html
• Added a viewpoint to the html
• Added a title to the html
• Re-referred everything to its new location
• Add a .gitignore to the codebase
• Changed base HTML look via CSS (refer to below img)

• Updated readme.md to remove the need of Node.js, as this is false, it is not needed
  • Changed the readme.md to further outline the install guide, changed the icon to the top of the title
  • Added all search engines to the list, Ecosia included.
  • For a visualisation, refer to the below image

Before optimisation

Total folder size (minus .git): 120kb
Total extension size (icons included): 32kb
Total extension size (minus icons): 16kb

After optimisation

Total folder size (minus .git): 98kb
Total extension size (icons included): 8kb
Total extension size (minus icons): 5kb

[kishanhitk]

Hey @SenpaiHunters thank you so much for the contribution.

The suggested changes looks very useful. Does this also fix incompatibility issue on Windows?

Also, I have added the license, so can you please open a PR with the changes?