Add settings to remote servers, use XDG paths on remote, and enable node LSPs (#19176)

Supersedes https://github.com/zed-industries/zed/pull/19166

TODO:
- [x] Update basic zed paths
- [x] update create_state_directory
- [x] Use this with `NodeRuntime`
- [x] Add server settings
- [x] Add an 'open server settings command'
- [x] Make sure it all works


Release Notes:

- Updated the actions `zed::OpenLocalSettings` and `zed::OpenLocalTasks`
to `zed::OpenProjectSettings` and `zed::OpenProjectTasks`.

---------

Co-authored-by: Conrad <conrad@zed.dev>
Co-authored-by: Richard <richard@zed.dev>

crates/theme/src/settings.rs

@@ -636,7 +636,12 @@ impl settings::Settings for ThemeSettings {
             unnecessary_code_fade: defaults.unnecessary_code_fade.unwrap_or(0.0),
         };
 
-        for value in sources.user.into_iter().chain(sources.release_channel) {
+        for value in sources
+            .user
+            .into_iter()
+            .chain(sources.release_channel)
+            .chain(sources.server)
+        {
             if let Some(value) = value.ui_density {
                 this.ui_density = value;
             }