feat(typst): add code annotation and filename support

[mcanouil]

Introduce a unified wrapper for code blocks and skylighting transformed code blocks in Typst.

Add filename processing (lua/Typst) and code-annotation processing (lua/Typst).

---
title: "Code Annotations & Filename"
format:
  typst:
    keep-typ: true
    pdf-standard: ua-1
syntax-highlighting: github-dark
code-annotations: true
engine: knitr
---

## Code Cell with Filename and Annotations

```{r}
#| filename: "hello.R"
print("Hello, world!") # <1>
```

1. This is a comment in R. It will not be executed as code.

## Code Cell with Annotations

```{r}
print("Hello, world!") # <1>
```

1. This is a comment in R. It will not be executed as code.

## Code Cell with Filename

```{r}
#| filename: "hello.R"
print("Hello, world!")
```

{{< pagebreak >}}

## Code Block with Filename and Annotations

```{.r filename="hello.R"}
print("Hello, world!") # <1>
```

1. This is a comment in R. It will not be executed as code.

## Code Block with Annotations

```{.python}
print("Hello, world!") # <1>
print("Bye, world!") # <1>
```

1. This is a comment in Python. It will not be executed as code.

## Code Block with Filename

```{.typst filename="hello.typ"}
#let hello = "Hello, world!"
```

To-Do:

• Investigate the "test-bundle" CI/CD failures
• Create changelog-1.10.md and add entry

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