xmake: add target extensions deps

xmake.lua

@@ -54,6 +54,13 @@ target("SimpleProtocolLib")
         add_headerfiles("include/(sp/" .. folder .. "/**.h)")
     end
 
+    -- adding extensions
+    for name, module in table.orderpairs(modules) do
+	    if module.Deps and has_config(module.Option) then
+            add_deps("SimpleProtocolLib-" .. name)
+        end
+    end
+
     -- we don't want extensions
     remove_files("src/sp/extensions/**.cpp")
     set_group("Library")