Support window-rules

Two types of window rules are supported, actions and properties. They are
defined as shown below.

    <windowRules>

      <!-- Action -->
      <windowRule identifier="some-application">
        <action name="Maximize"/>
      </windowRule>

      <!-- Property -->
      <windowRule identifier="foo*" serverDecoration="yes|no"/>

    </windowRules>

Rules are applied if windows match the criteria defined by the
'identifier' attribute which relates to app_id for native Wayland windows
and WM_CLASS for XWayland clients.

Matching against patterns with '*' (wildcard) and '?' (joker) is
supported.

Add 'serverDecoration' property.

src/view.c

@@ -9,6 +9,7 @@
 #include "regions.h"
 #include "ssd.h"
 #include "view.h"
+#include "window-rules.h"
 #include "workspaces.h"
 #include "xwayland.h"
 
@@ -658,6 +659,7 @@ void
 view_set_decorations(struct view *view, bool decorations)
 {
 	assert(view);
+
 	if (view->ssd_enabled != decorations && !view->fullscreen) {
 		/*
 		 * Set view->ssd_enabled first since it is referenced