Libraries: Create top level directory for libraries.

Things were getting a little crowded in the project root, so this patch
moves the Lib*/ directories into Libraries/.

Libraries/LibCore/CProcessStatisticsReader.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include <AK/AKString.h>
+#include <AK/HashMap.h>
+
+struct CProcessStatistics {
+    pid_t pid;
+    unsigned nsched;
+    String name;
+    String state;
+    String username;
+    uid_t uid;
+    String priority;
+    size_t virtual_size;
+    size_t physical_size;
+    unsigned syscalls;
+};
+
+class CProcessStatisticsReader {
+public:
+    CProcessStatisticsReader();
+    HashMap<pid_t, CProcessStatistics> get_map();
+
+private:
+    void update_map(HashMap<pid_t, CProcessStatistics>& map);
+    String get_username_from_uid(const uid_t uid);
+
+    HashMap<uid_t, String> m_usernames;
+};