feat: Allow port names to be placed outside of a block

doc/examples.typ

@@ -305,6 +305,20 @@ wire.stub("g2-port-in",  "west")
 wire.stub("g2-port-out", "east")
 ```, vertical: true)
 
+#let port-names-outside = example(```
+element.block(
+  x: 0, y: 0, w: 2, h: 2, id: "block",
+  port-names-outside: true,
+  port-name-padding: 4pt,
+  ports: (
+    north: ((id: "clk", name: "CLK", clock: true),),
+    west: ((id: "in1", name: "A"),
+           (id: "in2", name: "B")),
+    east: ((id: "out", name: "Y"),)
+  )
+)
+```)
+
 #let port-shape = example(```
 // Block with pentagon-shaped ports.
 // - port-shape / port-kind / port-size are element-level defaults.