add config for kitty + update fish shell config

home/private_dot_config/kitty/kitty.conf

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+# nord theme
+include ./nord.conf
+
+# bg opacity & blur
+background_opacity 0.8
+background_blur 16
+
+# fonts
+font_family      SpaceMono Nerd Font
+bold_font        auto
+italic_font      auto
+bold_italic_font auto
+
+# tab bar 
+tab_bar_margin_height 2.0 2.0
+tab_bar_style powerline
+tab_powerline_style angled
+
+# links
+mouse_map ctrl+left click grabbed,ungrabbed mouse_handle_click selection link prompt

home/private_dot_config/kitty/nord.conf

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+# Nord Colorscheme for Kitty
+# Based on:
+# - https://gist.github.com/marcusramberg/64010234c95a93d953e8c79fdaf94192
+# - https://github.com/arcticicestudio/nord-hyper
+
+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