Provide a button to clear session data (#231)

Fixes #214

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Co-authored-by: graphite-app[bot] <96075541+graphite-app[bot]@users.noreply.github.com>

src/ipc/ipc_host.ts

@@ -17,6 +17,7 @@ import { registerVersionHandlers } from "./handlers/version_handlers";
 import { registerLanguageModelHandlers } from "./handlers/language_model_handlers";
 import { registerReleaseNoteHandlers } from "./handlers/release_note_handlers";
 import { registerImportHandlers } from "./handlers/import_handlers";
+import { registerSessionHandlers } from "./handlers/session_handlers";
 
 export function registerIpcHandlers() {
   // Register all IPC handlers by category
@@ -39,4 +40,5 @@ export function registerIpcHandlers() {
   registerLanguageModelHandlers();
   registerReleaseNoteHandlers();
   registerImportHandlers();
+  registerSessionHandlers();
 }