Tear out or duplicate what's unique for WindowServer from Widgets.

This turned into a huge refactoring that somehow also includes
making locks recursive/reentrant.

WindowServer/main.cpp

@@ -0,0 +1,25 @@
+#include "Process.h"
+#include <Widgets/Font.h>
+#include <WindowServer/WSFrameBuffer.h>
+#include <WindowServer/WSWindowManager.h>
+#include <WindowServer/WSEventLoop.h>
+#include <WindowServer/WSWindow.h>
+
+// NOTE: This actually runs as a kernel process.
+//       I'd like to change this eventually.
+
+void WindowServer_main()
+{
+    auto info = current->get_display_info();
+
+    dbgprintf("Screen is %ux%ux%ubpp\n", info.width, info.height, info.bpp);
+
+    WSFrameBuffer framebuffer((dword*)info.framebuffer, info.width, info.height);
+
+    WSWindowManager::the();
+
+    dbgprintf("Entering WindowServer main loop.\n");
+    WSEventLoop::the().exec();
+
+    ASSERT_NOT_REACHED();
+}