refactor(jupyter): use runtimelib for Jupyter structures and directory paths (#23826)

This brings in [`runtimelib`](https://github.com/runtimed/runtimed) to
use:

## Fully typed structs for Jupyter Messages

```rust
let msg = connection.read().await?;

self
  .send_iopub(
    runtimelib::Status::busy().as_child_of(msg),
  )
  .await?;
```

## Jupyter paths

Jupyter paths are implemented in Rust, allowing the Deno kernel to be
installed completely via Deno without a requirement on Python or
Jupyter. Deno users will be able to install and use the kernel with just
VS Code or other editors that support Jupyter.

```rust
pub fn status() -> Result<(), AnyError> {
  let user_data_dir = user_data_dir()?;

  let kernel_spec_dir_path = user_data_dir.join("kernels").join("deno");
  let kernel_spec_path = kernel_spec_dir_path.join("kernel.json");

  if kernel_spec_path.exists() {
    log::info!("✅ Deno kernel already installed");
    Ok(())
  } else {
    log::warn!("ℹ️ Deno kernel is not yet installed, run `deno jupyter --install` to set it up");
    Ok(())
  }
}
```

Closes https://github.com/denoland/deno/issues/21619

2 files changed, 0 insertions, 13 deletions

diff --git a/tests/specs/jupyter/install_command_not_exists/__test__.jsonc b/tests/specs/jupyter/install_command_not_exists/__test__.jsonc
deleted file mode 100644
index 9552157bd..000000000
--- a/tests/specs/jupyter/install_command_not_exists/__test__.jsonc
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "args": "jupyter --install",
-  "output": "install_command_not_exists.out",
-  "envs": {
-    "PATH": ""
-  },
-  "exitCode": 1
-}
diff --git a/tests/specs/jupyter/install_command_not_exists/install_command_not_exists.out b/tests/specs/jupyter/install_command_not_exists/install_command_not_exists.out
deleted file mode 100644
index 1bb176e20..000000000
--- a/tests/specs/jupyter/install_command_not_exists/install_command_not_exists.out
+++ /dev/null
@@ -1,5 +0,0 @@
-Warning "deno jupyter" is unstable and might change in the future.
-error: Failed to spawn 'jupyter' command. Is JupyterLab installed (https://jupyter.org/install) and available on the PATH?
-
-Caused by:
-[WILDCARD]