feat: Avoid trimming indentation from doc code blocks

[zhfr7]

• Avoids trimming indentation from doc code block lines by keeping track of whether the current line is between two code fences or not.
  • Assumes that "```ab" and "```" are the start and end fences respectively.
  • Also assumes that the start of the indentation is one space after "///".
• Additionally remove the use of format as it just a combination of two push_strs, but also creates a new String.

I'm not that sure about the second point but let me know if format is still preferred here, I just feel like it creating a new String is unnecessary, when you can just refer to the original &strs.

Closes #956.

[codecov]

Codecov Report

❌ Patch coverage is 95.65217% with 1 line in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/modules/statement/comment_doc.rs	95.65%	1 Missing ⚠️

📢 Thoughts on this report? Let us know!

[Ph0enixKM]

Thank you @zhfr7 for your help! This PR gave me a smile on my face as I had no time to do it yet I've been constantly thinking about fixing this. There is just so much to do. Thank you for your contribution, I really appreciate it.

Your PR is very good. There is just one tought that I had in my mind when reading the diff. The solution could cover not only ab codeblocks but also any block that starts with three backticks... Unless you see some limitations with this approach.

[Ph0enixKM]

This probably assumes that each codeblock is one space away. This example:

///```ab
///let a = 12
///```

Generates:

```ab
et a = 12
```

I think that we should probably left_trim by the same amount we left_trim the starting block (```ab).

[Ph0enixKM]

I'm not that sure about the second point but let me know if format is still preferred here, I just feel like it creating a new String is unnecessary, when you can just refer to the original &strs.

Absolutely on point. Thanks!