Skia-Canvas integration, along with additional benchmarks

[ayush-badola]

In this PR, I have created a new branch for integrating Skia-Canvas and have also added one test case in a new test. The test file is named "skia-canvas.js".

Now, user can specify the 'engine' he wants to use. The 3 options for 'engine' are puppeteer, playwright and Skia-Canvas.

The main difficulty was to isolate parts of the code for puppeteer and playwright and then write an entirely new code for the functions of Skia-Canvas as the working of Skia is entirely different.
One major problem which I faced was the centering of the graph. The graph Skia generated was not centered and neither was zoomed. To solve this, I had to re-write the whole implementation of Skia to make sure to draw the graph manually, from center.
Using this method, the workaround for Skia-Canvas was made successful.

Also, I encountered some issue with playwright's grid layout, which now has been resolved.

I have also added benchmarks in every test, which clearly shows the extra ordinary performance of playwright and Skia-Canvas regarding the rendering time and memory used.

[maxkfranz]

You're welcome to post and update a PR like this one, but we won't be going forward with next steps until if and when a GSOC student is selected.

While PRs like this can provide some additional information with your application, each application will be evaluated individually to be fair to all applicants.