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/debug_adapter_extension/src/debug_adapter_extension.rs

@@ -1,7 +1,7 @@
 mod extension_dap_adapter;
 mod extension_locator_adapter;
 
-use std::sync::Arc;
+use std::{path::Path, sync::Arc};
 
 use dap::DapRegistry;
 use extension::{ExtensionDebugAdapterProviderProxy, ExtensionHostProxy};
@@ -34,8 +34,11 @@ impl ExtensionDebugAdapterProviderProxy for DebugAdapterRegistryProxy {
         &self,
         extension: Arc<dyn extension::Extension>,
         debug_adapter_name: Arc<str>,
+        schema_path: &Path,
     ) {
-        if let Some(adapter) = ExtensionDapAdapter::new(extension, debug_adapter_name).log_err() {
+        if let Some(adapter) =
+            ExtensionDapAdapter::new(extension, debug_adapter_name, schema_path).log_err()
+        {
             self.debug_adapter_registry.add_adapter(Arc::new(adapter));
         }
     }
@@ -51,4 +54,13 @@ impl ExtensionDebugAdapterProviderProxy for DebugAdapterRegistryProxy {
                 locator_name,
             )));
     }
+
+    fn unregister_debug_adapter(&self, debug_adapter_name: Arc<str>) {
+        self.debug_adapter_registry
+            .remove_adapter(&debug_adapter_name);
+    }
+
+    fn unregister_debug_locator(&self, locator_name: Arc<str>) {
+        self.debug_adapter_registry.remove_locator(&locator_name);
+    }
 }

crates/debug_adapter_extension/src/extension_dap_adapter.rs

@@ -26,11 +26,13 @@ impl ExtensionDapAdapter {
     pub(crate) fn new(
         extension: Arc<dyn extension::Extension>,
         debug_adapter_name: Arc<str>,
+        schema_path: &Path,
     ) -> Result<Self> {
-        let schema = std::fs::read_to_string(extension.path_from_extension(
-            &Path::new("debug_adapter_schemas").join(debug_adapter_name.as_ref()),
-        ))
-        .with_context(|| format!("Failed to read debug adapter schema for {debug_adapter_name}"))?;
+        let schema = std::fs::read_to_string(&schema_path).with_context(|| {
+            format!(
+                "Failed to read debug adapter schema for {debug_adapter_name} (from path: `{schema_path:?}`)"
+            )
+        })?;
         let schema = serde_json::Value::from_str(&schema).with_context(|| {
             format!("Debug adapter schema for {debug_adapter_name} is not a valid JSON")
         })?;