tablet: implement version 2

wire/jay_seat_events.txt

@@ -267,3 +267,14 @@ event touch_cancel {
     time_usec: pod(u64),
     id: i32,
 }
+
+event tablet_pad_dial_delta {
+    value120: i32,
+}
+
+event tablet_pad_dial_frame {
+    seat: u32,
+    time_usec: pod(u64),
+    input_device: u32,
+    dial: u32,
+}

wire/zwp_tablet_pad_dial_v2.txt

@@ -0,0 +1,15 @@
+request set_feedback {
+    description: str,
+    serial: u32,
+}
+
+request destroy {
+}
+
+event delta {
+    value120: i32,
+}
+
+event frame {
+    time: u32,
+}

wire/zwp_tablet_pad_group_v2.txt

@@ -25,3 +25,7 @@ event mode_switch {
     serial: u32,
     mode: u32,
 }
+
+event dial {
+    dial: id(zwp_tablet_pad_dial_v2),
+}

wire/zwp_tablet_v2.txt

@@ -19,3 +19,7 @@ event done {
 
 event removed {
 }
+
+event bustype {
+    bustype: u32,
+}