qapi: Move include/qapi/qmp/ to include/qobject/

The general expectation is that header files should follow the same
file/path naming scheme as the corresponding source file. There are
various historical exceptions to this practice in QEMU, with one of
the most notable being the include/qapi/qmp/ directory. Most of the
headers there correspond to source files in qobject/.

This patch corrects most of that inconsistency by creating
include/qobject/ and moving the headers for qobject/ there.

This also fixes MAINTAINERS for include/qapi/qmp/dispatch.h:
scripts/get_maintainer.pl now reports "QAPI" instead of "No
maintainers found".

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Acked-by: Halil Pasic <pasic@linux.ibm.com> #s390x
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20241118151235.2665921-2-armbru@redhat.com>
[Rebased]
diff --git a/monitor/monitor.c b/monitor/monitor.c
index 9fad61f..c5a5d30 100644
--- a/monitor/monitor.c
+++ b/monitor/monitor.c
@@ -28,7 +28,7 @@
 #include "qapi/opts-visitor.h"
 #include "qapi/qapi-emit-events.h"
 #include "qapi/qapi-visit-control.h"
-#include "qapi/qmp/qdict.h"
+#include "qobject/qdict.h"
 #include "qemu/error-report.h"
 #include "qemu/option.h"
 #include "system/qtest.h"