Move label and icon registration for copy serial

Moves the registration of the label and icon for the copy output
button of the serial monitor to the toolbar item registration. Before,
it happened at the command registration, but is not necessary at this
level, as the icon and label are meant for the toolbar button only.

Author: 502E532E

arduino-ide-extension/src/browser/serial/monitor/monitor-view-contribution.tsx

@@ -52,14 +52,9 @@ export namespace SerialMonitor {
       },
       'vscode/output.contribution/clearOutput.label'
     );
-    export const COPY_OUTPUT = Command.toLocalizedCommand(
-      {
-        id: 'serial-monitor-copy-output',
-        label: 'Copy Output',
-        iconClass: codicon('copy'),
-      },
-      'arduino/serial/copyOutput'
-    );
+    export const COPY_OUTPUT = {
+      id: 'serial-monitor-copy-output',
+    };
   }
 }
 
@@ -160,10 +155,8 @@ export class MonitorViewContribution
     registry.registerItem({
       id: SerialMonitor.Commands.COPY_OUTPUT.id,
       command: SerialMonitor.Commands.COPY_OUTPUT.id,
-      tooltip: nls.localize(
-        'arduino/serial/copyOutput',
-        'Copy Output'
-      ),
+      icon: codicon('copy'),
+      tooltip: nls.localize('arduino/serial/copyOutput', 'Copy Output'),
     });
   }