Replace code flask with a more active alternative

[sweetppro]

Code flask was last updated 5yrs ago, and can be slow on large inputs.

https://github.com/WebCoder49/code-input seems to be quite active with the last release only 3 months ago. The setup looks similar to code flask and it also utilises prism.js or highlight.js for syntax highlighting.

[knadh]

Was thinking about this the other day. CC @Bowrna, since you've a CodeFlask related PR in the works.

[Bowrna]

Yes I can check this.

[Remceau]

Is there any information on when code flask will be replaced? I have users complaining about problems related to upstream issue kazzkiq/CodeFlask#72. A fix should be relatively simple and I'm willing to give it a try, but it wouldn't be of any use if an alternative is ready for the next release.

[Bowrna]

hello @Remceau i was working on this PR #2139 that replaces code flask with code-input. Due to health issues, I didn't try closing the PR as promised. I will try closing this.