ref(event): split Size into two Points (one for the size and one for the anchor / origin)

src/event.zig

@@ -6,7 +6,7 @@ const terminal = @import("terminal.zig");
 
 const Key = input.Key;
 const Mouse = input.Mouse;
-const Size = @import("size.zig").Size;
+const Point = @import("point.zig").Point;
 
 /// System events available to every `zterm.App`
 pub const SystemEvent = union(enum) {
@@ -21,8 +21,8 @@ pub const SystemEvent = union(enum) {
         /// associated error message
         msg: []const u8,
     },
-    /// Resize event emitted by the terminal to derive the `Size` of the current terminal the application is rendered in
-    resize: Size,
+    /// Size event emitted by the terminal to derive the `Size` of the current terminal the application is rendered in
+    size: Point,
     /// Input key event received from the user
     key: Key,
     /// Mouse input event