[Extension] Extract and test Compliant and Non-compliant code blocks

[x0rw]

Extract code blocks from .rst files and create a global Rust test file (generated.rs) to check them all together using
rustc --test --edition=2021 exts/rust-code-runner/generated.rs under the hood.

Features:

• marker comments to hide specific code from being rendered in html:

      .. code-block:: rust

        // HIDDEN START
        use std::fs;
        use std::io::{self, Read};
        // HIDDEN END 

anything between // HIDDEN START and // HIDDEN END will not be rendered but will still be included for compilation in the generated test file.

• This extension is not tied to the other 'needs' extension so it can be used in other projects that require similar features.
• A set of functions that parse rustc --error-format=json output and extract minimal error information.

Tasks:

• Write unit tests -- this mostly uses regex(scary) for extracting code blocks.
• Comments
• Refactor
• Feature-gate running code, for CI integration.

How to test:

Run: ./make.py -c --offline it will notify you in case there is any issue in any code block,
also check exts/rust-code-runner/generated.rs after doing so.

(Not rebased yet)
Resolves #80

[netlify]

✅ Deploy Preview for scrc-coding-guidelines ready!

Name	Link
🔨 Latest commit	b882c1d
🔍 Latest deploy log	https://app.netlify.com/projects/scrc-coding-guidelines/deploys/68694de1027678000825062c
😎 Deploy Preview	https://deploy-preview-91--scrc-coding-guidelines.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify project configuration.

[PLeVasseur]

Hey @x0rw -- thanks for starting on this!

Could I ask for your reason for choosing the 2021 edition instead of the newer 2024 edition?

[x0rw]

Could I ask for your reason for choosing the 2021 edition instead of the newer 2024 edition?

I just went with 2021 out of habit.

[PLeVasseur]

Could I ask for your reason for choosing the 2021 edition instead of the newer 2024 edition?

I just went with 2021 out of habit.

Could we update to the 2024 edition then?

[PLeVasseur]

Hey @x0rw -- wanted to check in to see if this is a work in progress or ready for review

[x0rw]

It’s still in progress. I need to write some tests for it (haven’t found the time yet) because it can easily fail and cause false alerts, I guess.

[PLeVasseur]

Okay, thanks for the update.

[PLeVasseur]

Hey @x0rw -- checking in on this PR. How's it going? Anything needed to help? ☺️

[x0rw]

Hey @PLeVasseur.
It's ready,
Now, it aggregates all the code blocks in a rust project structure and prevents hidden sections from appearing in other builds(html..), then it sanitises these codeb blocks, to remove stuffs like "#[macro_export]" and "#[tokio::main]" that could break the tests.

• the standard generated cargo.toml can be set to include external crates that are common in the tests like tokio, because i think when we reach Concurrency chapters, we will need external crates for some examples.
• running ./make.py collects test code blocks in build/rust-code-blocks/ and running ./make.py -c --offline --test-rust-blocks will test them and report the errors back,
  also try to intentionally write fallible code in a code block.
  and tell me if more flags or configurable options are necessary.