head-management: add tearing-state-v1 extension

wire/jay_head_ext_tearing_state_v1.txt

@@ -0,0 +1,19 @@
+request destroy (destructor) {
+
+}
+
+event enabled {
+
+}
+
+event disabled {
+
+}
+
+event active {
+
+}
+
+event inactive {
+
+}

wire/jay_head_manager_ext_tearing_state_v1.txt

@@ -0,0 +1,7 @@
+request destroy (destructor) {
+
+}
+
+event head {
+    head: id(jay_head_ext_tearing_state_v1) (new),
+}