Added personal Iris Rev6a layout and Milk 2% layout (#17600)

by JellyTitan

keyboards/spaceman/2_milk/keymaps/copypasta_macfancy/readme.md

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+# Copypasta Macfancy Keymap for Milk 2%
+
+![copypasta_macfancy](https://i.imgur.com/7LMZZrL.png)
+
+Extra fancy copy/paste utilities for the Milk 2% keyboard on MacOS. Milk 2% designed by [Spaceman](https://github.com/Spaceboards/SpaceboardsHardware/tree/master/Keyboards/2%25%20Milk).
+
+Uses Tapping term for double and tripple tapping.
+Tapping speed can be adjusted with TAPPING_TERM in config.h
+
+### Key One
+- 1 Tap: Copy
+- 2 Taps: Cut
+- 3 Taps: Tab
+
+### Key Two
+- 1 Tap: Paste
+- 2 Taps: Paste as Value
+- 3 Taps: Tab between programs