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 421f467e213150254ab10dbe09dd6382bf6c54eb.

* 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/ghostty.conf

@@ -0,0 +1,23 @@
+# Background and foreground colors
+background = #060B1E
+foreground = #ffcead
+
+# Standard colors
+palette = 0=#060B1E
+palette = 1=#ED5B5A
+palette = 2=#92a593
+palette = 3=#E9BB4F
+palette = 4=#7d82d9
+palette = 5=#c89dc1
+palette = 6=#a3bfd1
+palette = 7=#F99957
+
+# Bright colors
+palette = 8=#6d7db6
+palette = 9=#faaaa9
+palette = 10=#c4cfc4
+palette = 11=#f7dc9c
+palette = 12=#c2c4f0
+palette = 13=#ead7e7
+palette = 14=#dfeaf0
+palette = 15=#ffcead