[Keyboard] move @ibnuda 's keebs into /ibnuda (#16108)

keyboards/ibnuda/squiggle/readme.md

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+# squiggle
+
+![squiggle](https://i.imgur.com/5UhvDsjl.jpg)
+
+It's a keyboard family which has the following requirements:
+
+-  5 columns per hand.
+-  No numrow.
+-  Split.
+-  Symmetric.
+
+* Keyboard Maintainer: [ibnuda](https://github.com/ibnuda)
+* Hardware Supported: Atmega32u4.
+* Hardware Availability: [repo](https://github.com/ibnuda/squiggle).
+
+Make example for this keyboard (after setting up your build environment):
+
+    make ibnuda/squiggle:default
+
+See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).
+
+To enter to the bootloader you need to:
+
+* Press the key mapped to `RESET`