head-management: add compositor-space-scaler-v1 extension

wire/jay_head_ext_compositor_space_scaler_v1.txt

@@ -0,0 +1,12 @@
+request destroy (destructor) {
+
+}
+
+request set_scale {
+    scale: u32,
+}
+
+event range {
+    min: u32,
+    max: u32,
+}

wire/jay_head_manager_ext_compositor_space_scaler_v1.txt

@@ -0,0 +1,7 @@
+request destroy (destructor) {
+
+}
+
+event head {
+    head: id(jay_head_ext_compositor_space_scaler_v1) (new),
+}