Add initial install and config for macos window manager

src_files/.config/skhd/skhdrc

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+# staring file was at /opt/homebrew/opt/yabai/share/yabai/examples
+# list of built-in keywords at https://github.com/koekeishiya/skhd/issues/1
+
+# in managed mode: swap current window
+shift + cmd - k : yabai -m window --swap north
+shift + cmd - j : yabai -m window --swap south
+shift + cmd - h : yabai -m window --swap west
+shift + cmd - l : yabai -m window --swap east
+
+# move focused window to the given space
+shift + cmd - 1 : yabai -m window --space 1
+shift + cmd - 2 : yabai -m window --space 2
+shift + cmd - 3 : yabai -m window --space 3
+shift + cmd - 4 : yabai -m window --space 4
+shift + cmd - 5 : yabai -m window --space 5
+shift + cmd - 6 : yabai -m window --space 6
+shift + cmd - 7 : yabai -m window --space 7
+shift + cmd - 8 : yabai -m window --space 8
+shift + cmd - 9 : yabai -m window --space 9
+
+# balance window sizes
+shift + cmd - 0 : yabai -m space --balance
+# all windows in a space back to the grid (managed)
+shift + cmd - g : yabai -m space --layout bsp
+# all windows in a space to float and each fill screen
+shift + cmd - f : yabai -m space --layout float \
+                      | yabai -m query --windows --space \
+                      | jq '.[].id' \
+                      | xargs -I % yabai -m window % --grid 1:1:0:0:1:1
+
+# focus on next/previous window
+shift + cmd - n : yabai -m window --focus next
+shift + cmd - p : yabai -m window --focus prev
+