feat(workspace): support object config (#24483)

This adds object config for the workspace config:

```json
{
  "workspace": {
    "members": ["./member-1", "./member-2"]
  }
}
```

This is a more verbose version of `"workspace": ["./member-1",
"./member-2"]`. Although we don't need it at the moment, it makes the
naming of `"workspace"` more clear and leaves the object open for more
config in the future.

Closes #24456

Cargo.toml

@@ -101,7 +101,7 @@ console_static_text = "=0.8.1"
 data-encoding = "2.3.3"
 data-url = "=0.3.0"
 deno_cache_dir = "=0.10.0"
-deno_config = { version = "=0.20.2", default-features = false }
+deno_config = { version = "=0.20.4", default-features = false }
 dlopen2 = "0.6.1"
 ecb = "=0.1.2"
 elliptic-curve = { version = "0.13.4", features = ["alloc", "arithmetic", "ecdh", "std", "pem"] }

cli/lsp/config.rs

@@ -1534,11 +1534,12 @@ impl ConfigData {
 
     let workspace = config_file
       .as_ref()
-      .and_then(|c| c.json.workspace.as_ref().map(|w| (c, w)));
+      .and_then(|c| c.to_workspace_config().ok().flatten().map(|w| (c, w)));
     let is_workspace_root = workspace.is_some();
     let workspace_members = if let Some((config, workspace)) = workspace {
       Arc::new(
         workspace
+          .members
           .iter()
           .flat_map(|p| {
             let dir_specifier = config.specifier.join(p).ok()?;

cli/schemas/config-file.v1.json

@@ -605,11 +605,27 @@
       ]
     },
     "workspace": {
-      "type": "array",
-      "items": {
-        "type": "string"
-      },
-      "description": "The members of this workspace."
+      "oneOf": [
+        {
+          "type": "array",
+          "items": {
+            "type": "string"
+          },
+          "description": "The members of this workspace."
+        },
+        {
+          "type": "object",
+          "properties": {
+            "members": {
+              "type": "array",
+              "items": {
+                "type": "string"
+              },
+              "description": "The members of this workspace."
+            }
+          }
+        }
+      ]
     }
   }
 }