feat(config): fish configs

config/fish/functions/_tide_cache_variables.fish

@@ -0,0 +1,17 @@
+function _tide_cache_variables
+    # Same-color-separator color
+    set_color $tide_prompt_color_separator_same_color | read -gx _tide_color_separator_same_color
+
+    # git
+    contains git $_tide_left_items $_tide_right_items && set_color $tide_git_color_branch | read -gx _tide_location_color
+
+    # private_mode
+    if contains private_mode $_tide_left_items $_tide_right_items && test -n "$fish_private_mode"
+        set -gx _tide_private_mode
+    else
+        set -e _tide_private_mode
+    end
+
+    # item padding
+    test "$tide_prompt_pad_items" = true && set -gx _tide_pad ' ' || set -e _tide_pad
+end