add kitty.conf for each theme; config switches with theme (#1296)

* add kitty.conf for each theme; config switches with theme

* Revise default config

* Correct restart location

---------

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

themes/nord/kitty.conf

@@ -0,0 +1,40 @@
+# Nord Colorscheme for Kitty
+
+foreground            #D8DEE9
+background            #2E3440
+selection_foreground  #000000
+selection_background  #FFFACD
+url_color             #0087BD
+cursor                #81A1C1
+
+# black
+color0   #3B4252
+color8   #4C566A
+
+# red
+color1   #BF616A
+color9   #BF616A
+
+# green
+color2   #A3BE8C
+color10  #A3BE8C
+
+# yellow
+color3   #EBCB8B
+color11  #EBCB8B
+
+# blue
+color4  #81A1C1
+color12 #81A1C1
+
+# magenta
+color5   #B48EAD
+color13  #B48EAD
+
+# cyan
+color6   #88C0D0
+color14  #8FBCBB
+
+# white
+color7   #E5E9F0
+color15  #ECEFF4