Add theme ethereal (#3464)

* Add theme Ethereal

* Update to follow the Omarchy hot reload

* Add aether to all themes

* Add a vscode theme

* Revert "Add aether to all themes"

This reverts commit 421f467e21.

* Format the kitty file

* Make available to all via migration

* Fix

* Add hot reload

* Change the background image to something of higher quality

This looks a lot better on a 6K monitor

* Highlight border color should be brighter than inactive color

* Add preview.png for new visual theme selector

* Add the ethereal nvim variant of aehter

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Co-authored-by: David Heinemeier Hansson <david@hey.com>

themes/ethereal/kitty.conf

@@ -0,0 +1,34 @@
+background #060B1E
+foreground #ffcead
+
+# black
+color0  #060B1E
+color8  #6d7db6
+
+# red
+color1  #ED5B5A
+color9  #faaaa9
+
+# green
+color2  #92a593
+color10 #c4cfc4
+
+# yellow
+color3  #E9BB4F
+color11 #f7dc9c
+
+# blue
+color4  #7d82d9
+color12 #c2c4f0
+
+# magenta
+color5  #c89dc1
+color13 #ead7e7
+
+#cyan
+color6  #a3bfd1
+color14 #dfeaf0
+
+#white
+color7  #F99957
+color15 #ffcead