Build: Switch to CMake :^)

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

Applications/IRCClient/CMakeLists.txt

@@ -0,0 +1,14 @@
+set(SOURCES
+    IRCAppWindow.cpp
+    IRCChannel.cpp
+    IRCChannelMemberListModel.cpp
+    IRCClient.cpp
+    IRCLogBuffer.cpp
+    IRCQuery.cpp
+    IRCWindow.cpp
+    IRCWindowListModel.cpp
+    main.cpp
+)
+
+serenity_bin(IRCClient)
+target_link_libraries(IRCClient LibWeb LibGUI)

Applications/IRCClient/Makefile

@@ -1,16 +0,0 @@
-OBJS = \
-    IRCClient.o \
-    IRCChannel.o \
-    IRCQuery.o \
-    IRCLogBuffer.o \
-    IRCAppWindow.o \
-    IRCWindow.o \
-    IRCWindowListModel.o \
-    IRCChannelMemberListModel.o \
-    main.o
-
-PROGRAM = IRCClient
-
-LIB_DEPS = Web TextCodec JS Markdown GUI Gfx Protocol IPC Thread Pthread Core
-
-include ../../Makefile.common