Add fish config

fish/.config/fish/functions/_tide_item_character.fish

@@ -0,0 +1,17 @@
+function _tide_item_character
+    test $_tide_status = 0 && set_color $tide_character_color || set_color $tide_character_color_failure
+
+    set -q add_prefix || echo -ns ' '
+
+    test "$fish_key_bindings" = fish_default_key_bindings && echo -ns $tide_character_icon ||
+        switch $fish_bind_mode
+            case insert
+                echo -ns $tide_character_icon
+            case default
+                echo -ns $tide_character_vi_icon_default
+            case replace replace_one
+                echo -ns $tide_character_vi_icon_replace
+            case visual
+                echo -ns $tide_character_vi_icon_visual
+        end
+end