Handle Offline case

[0xdeathbed]

In case of no internet connectivity
this fails:

 let release = zed::latest_github_release(
            "fwcd/kotlin-language-server",
            zed::GithubReleaseOptions {
                require_assets: true,
                pre_release: false,
            },
        )?;

which end up giving Some("") . And resulting in lsp not starting even if present

[cholwell]

feel free to open a pr

when I have some time I can look if / how other extensions are handling this

[0xdeathbed]

Some are like this and some use local binary from PATH using worktee.