[Keymap] Architeutis Dux keymap (#14728)

keyboards/a_dux/keymaps/daliusd/readme.md

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+# My 34 keys layout
+
+This are my principles for layout:
+
+* I am using Callum style layout. Here you can read explanation by
+  Callum himself and his reasoning for not using mod-tap:
+  [here](../../../../users/callum/readme.md)
+
+* There should be only one way to type key. Key can be on
+  different layer but it must maintain its physical location.
+
+* The less features are used the better.
+
+* trilayer is cool.
+
+* There is 🐍 key for no reason.
+
+As well I have added one shot layers compatible with Callum's one
+shot keys.
+
+There is simple TMUX layer as well.