Feat: add wp script to list ports

scripts/wireplumber/ls-ports.lua

+-- Dump all Wireplumber ports
+
+function dump(o)
+   if type(o) == 'table' then
+      local s = '{ '
+      for k,v in pairs(o) do
+         if type(k) ~= 'number' then k = '"'..k..'"' end
+         s = s .. '['..k..'] = ' .. dump(v) .. ',\n'
+      end
+      return s .. '} '
+   else
+      return tostring(o)
+   end
+end
+
+local port_om = ObjectManager {
+  Interest {
+    type = "port",
+  }
+}
+
+port_om:connect("object-added", function (om, port)
+  print(dump(port.properties) .. '\n\n')
+end)
+
+port_om:activate()
\ No newline at end of file