Add support for renderer attribute in run() function

[arihantparsoya]

Add new attribute called renderer in run() function. The attribute should initiate the renderer based on the value passed.

For example to use vispy: run(renderer="vispy")

In future when new renderers are added, they can be initialised using this attribute.

[Andy-Python-Programmer]

I want to work on this issue but if I write the code or even try to run it I get this error:

FileNotFoundError: [Errno 2] No such file or directory: 'C:\\Users\\user\\AppData\\Local\\Programs\\Python\\Python38-32\\lib\\site-packages\\p5\\sketch\\shaders\\2d\\default2d.vert'

[arihantparsoya]

Can you open a new issue for this? With the code you are trying to run

[Andy-Python-Programmer]

I have just forked and downloaded this repo to work on this issue. No changes are made