Parse registry.vdf when looking for Sourcemod directory on Linux

[Jan200101]

No description provided.

[ktwrd]

Should return (or at least log) that error

...
Err(e) => {
    warn!("[find_sourcemod_path] failed to parse vdf content {:#?}", e);
}
...

Or

...
// src/helper/linux.rs
Err(e) => {
    return Err(BeansError::VdfParseFailure {
		error: e,
		content: vdf_content.clone()
	});
}
...
// src/error.rs
pub enum BeansError {
...
    #[error("Failed to parse VDF File {:error}")]
    VdfParseFailure {
        error: <the error type that Vdf::parse provides>
        content: String
    }
}