extensions: Yet another PR for debugger touchups (#32822)

We'll now clean up DAP locators for unloaded extensions and load schemas
proper

I can now load a custom Ruby extensions with all bells and whistles and
use it as my debugger.

Release Notes:

- N/A

crates/extension/src/extension_host_proxy.rs

@@ -1,4 +1,4 @@
-use std::path::PathBuf;
+use std::path::{Path, PathBuf};
 use std::sync::Arc;
 
 use anyhow::Result;
@@ -411,17 +411,29 @@ impl ExtensionIndexedDocsProviderProxy for ExtensionHostProxy {
 }
 
 pub trait ExtensionDebugAdapterProviderProxy: Send + Sync + 'static {
-    fn register_debug_adapter(&self, extension: Arc<dyn Extension>, debug_adapter_name: Arc<str>);
+    fn register_debug_adapter(
+        &self,
+        extension: Arc<dyn Extension>,
+        debug_adapter_name: Arc<str>,
+        schema_path: &Path,
+    );
     fn register_debug_locator(&self, extension: Arc<dyn Extension>, locator_name: Arc<str>);
+    fn unregister_debug_adapter(&self, debug_adapter_name: Arc<str>);
+    fn unregister_debug_locator(&self, locator_name: Arc<str>);
 }
 
 impl ExtensionDebugAdapterProviderProxy for ExtensionHostProxy {
-    fn register_debug_adapter(&self, extension: Arc<dyn Extension>, debug_adapter_name: Arc<str>) {
+    fn register_debug_adapter(
+        &self,
+        extension: Arc<dyn Extension>,
+        debug_adapter_name: Arc<str>,
+        schema_path: &Path,
+    ) {
         let Some(proxy) = self.debug_adapter_provider_proxy.read().clone() else {
             return;
         };
 
-        proxy.register_debug_adapter(extension, debug_adapter_name)
+        proxy.register_debug_adapter(extension, debug_adapter_name, schema_path)
     }
 
     fn register_debug_locator(&self, extension: Arc<dyn Extension>, locator_name: Arc<str>) {
@@ -431,4 +443,18 @@ impl ExtensionDebugAdapterProviderProxy for ExtensionHostProxy {
 
         proxy.register_debug_locator(extension, locator_name)
     }
+    fn unregister_debug_adapter(&self, debug_adapter_name: Arc<str>) {
+        let Some(proxy) = self.debug_adapter_provider_proxy.read().clone() else {
+            return;
+        };
+
+        proxy.unregister_debug_adapter(debug_adapter_name)
+    }
+    fn unregister_debug_locator(&self, locator_name: Arc<str>) {
+        let Some(proxy) = self.debug_adapter_provider_proxy.read().clone() else {
+            return;
+        };
+
+        proxy.unregister_debug_locator(locator_name)
+    }
 }