Build: Switch to CMake :^)

Closes https://github.com/SerenityOS/serenity/issues/2080

Applications/SystemMonitor/CMakeLists.txt

@@ -0,0 +1,16 @@
+set(SOURCES
+    DevicesModel.cpp
+    GraphWidget.cpp
+    main.cpp
+    MemoryStatsWidget.cpp
+    NetworkStatisticsWidget.cpp
+    ProcessFileDescriptorMapWidget.cpp
+    ProcessMemoryMapWidget.cpp
+    ProcessModel.cpp
+    ProcessStacksWidget.cpp
+    ProcessTableView.cpp
+    ProcessUnveiledPathsWidget.cpp
+)
+
+serenity_bin(SystemMonitor)
+target_link_libraries(SystemMonitor LibGUI LibPCIDB)

Applications/SystemMonitor/Makefile

@@ -1,18 +0,0 @@
-OBJS = \
-    ProcessModel.o \
-    DevicesModel.o \
-    ProcessTableView.o \
-    MemoryStatsWidget.o \
-    GraphWidget.o \
-    ProcessStacksWidget.o \
-    ProcessMemoryMapWidget.o \
-    ProcessFileDescriptorMapWidget.o \
-    NetworkStatisticsWidget.o \
-    ProcessUnveiledPathsWidget.o \
-    main.o
-
-PROGRAM = SystemMonitor
-
-LIB_DEPS = GUI Gfx Protocol PCIDB IPC Thread Pthread Core
-
-include ../../Makefile.common