[Keymap] Add new Cyclops keymap (#6923)

keyboards/westfoxtrot/cyclops/keymaps/peippo/readme.md

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+# Cyclops keymap by peippo
+
+Nordic layout with faster access to cursor movement keys and brackets.
+
+## Keymap notes
+
+-   Default layer has a Grave Escape which outputs Escape when pressed normally, and `§` when Shift or Command are held. I like to setup Command+Esc to moving focus to next window (MacOS preferences, Keyboard / Shortcuts / Keyboard).
+-   `Caps Lock` can be held to access the modifier layer.
+
+## Modifier layer
+
+-   Additional cursor movement keys on `J/K/L/I`, and Page Up/Page Down on `U/O`.
+-   Easier access to [] & {} (w/ Shift) on `8/9`.
+-   Show desktop on `D`.
+-   Screen capture tool on `S`.
+-   Media shortcuts on Arrow keys & Page Up/Page Down.
+
+### Build
+
+To build the firmware, run `make westfoxtrot/cyclops:peippo`.