feat: add glob, grep and todo_write builtin tools

wwwroot/css/file-explorer.css

@@ -262,8 +262,8 @@
 /* EasyMDE Toolbar */
 .fe-mde-wrap .editor-toolbar {
   background: var(--f1-bg) !important;
+  border: none !important;
   border-bottom: var(--border-width) solid var(--f1-border) !important;
-  border-top: none !important;
   padding: 4px !important;
   opacity: 1 !important;
 }