ProcessManager: Rename it to SystemMonitor

This is a more appropriate name now that it does a lot
more than just manage processes ^)

Applications/SystemMonitor/ProcessTableView.h

@@ -0,0 +1,23 @@
+#pragma once
+
+#include <AK/Function.h>
+#include <LibGUI/GTableView.h>
+#include <unistd.h>
+
+class GraphWidget;
+class ProcessModel;
+
+class ProcessTableView final : public GTableView {
+public:
+    ProcessTableView(GraphWidget&, GWidget* parent);
+    virtual ~ProcessTableView() override;
+
+    pid_t selected_pid() const;
+
+    void refresh();
+
+    Function<void(pid_t)> on_process_selected;
+
+private:
+    virtual void model_notification(const GModelNotification&) override;
+};