touch: detach from pointer input

this detaches touch from pointer input. Touch should not affect where your cursor is, and it doesn't make much sense for it to move when we use touch

src/desktop/LayerSurface.hpp

@@ -85,3 +85,23 @@ class CLayerSurface {
         return m_layerSurface == rhs.m_layerSurface && m_monitor == rhs.m_monitor;
     }
 };
+
+inline bool valid(PHLLS l) {
+    return l;
+}
+
+inline bool valid(PHLLSREF l) {
+    return l;
+}
+
+inline bool validMapped(PHLLS l) {
+    if (!valid(l))
+        return false;
+    return l->m_mapped;
+}
+
+inline bool validMapped(PHLLSREF l) {
+    if (!valid(l))
+        return false;
+    return l->m_mapped;
+}