Build: Switch to CMake :^)

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

Libraries/LibCore/CMakeLists.txt

@@ -0,0 +1,32 @@
+set(SOURCES
+    ArgsParser.cpp
+    ConfigFile.cpp
+    DateTime.cpp
+    DirIterator.cpp
+    ElapsedTimer.cpp
+    Event.cpp
+    EventLoop.cpp
+    File.cpp
+    Gzip.cpp
+    IODevice.cpp
+    LocalServer.cpp
+    LocalSocket.cpp
+    MimeData.cpp
+    NetworkJob.cpp
+    NetworkResponse.cpp
+    Notifier.cpp
+    Object.cpp
+    ProcessStatisticsReader.cpp
+    puff.c
+    SocketAddress.cpp
+    Socket.cpp
+    StandardPaths.cpp
+    TCPServer.cpp
+    TCPSocket.cpp
+    Timer.cpp
+    UDPServer.cpp
+    UDPSocket.cpp
+)
+
+serenity_lib(LibCore core)
+target_link_libraries(LibCore LibC)

Libraries/LibCore/Makefile

@@ -1,37 +0,0 @@
-OBJS = \
-    ArgsParser.o \
-    ConfigFile.o \
-    DateTime.o \
-    DirIterator.o \
-    ElapsedTimer.o \
-    Event.o \
-    EventLoop.o \
-    File.o \
-    Gzip.o \
-    IODevice.o \
-    LocalServer.o \
-    LocalSocket.o \
-    MimeData.o \
-    NetworkJob.o \
-    NetworkResponse.o \
-    Notifier.o \
-    Object.o \
-    ProcessStatisticsReader.o \
-    Socket.o \
-    SocketAddress.o \
-    StandardPaths.o \
-    TCPServer.o \
-    TCPSocket.o \
-    Timer.o \
-    UDPServer.o \
-    UDPSocket.o \
-    puff.o
-
-LIBRARY = libcore.a
-
-install:
-	mkdir -p $(SERENITY_BASE_DIR)/Root/usr/include/LibCore/
-	cp *.h $(SERENITY_BASE_DIR)/Root/usr/include/LibCore/
-	cp $(LIBRARY) $(SERENITY_BASE_DIR)/Root/usr/lib/
-
-include ../../Makefile.common