feat(fish): add fish-shell

fish/config.fish

@@ -0,0 +1,43 @@
+if status is-interactive
+  # Commands to run in interactive sessions can go here
+  set fish_greeting ""
+  set -gx TERM xterm-256color
+
+  # theme
+  set -g theme_color_scheme dracula
+  set -g fish_prompt_pwd_dir_length 1
+  set -g theme_display_user yes
+  set -g theme_hide_hostname no
+  set -g theme_hostname always
+
+  # set default editor to nvim
+  set -gx EDITOR nvim
+
+  fzf_configure_bindings
+
+  # starship prompt
+  switch (uname)
+    case Darwin
+      if test -x /opt/homebrew/bin/starship;
+        /opt/homebrew/bin/starship init fish | source
+      end
+    case Linux
+    case '*'
+  end
+
+end
+
+# set PATH and load os-specify config
+switch (uname)
+  case Darwin
+    if test -x /opt/homebrew/bin/brew;
+      eval "$(/opt/homebrew/bin/brew shellenv)"
+      set -gx PATH ~/bin $PATH
+      source (dirname (status --current-filename))/config-osx.fish
+    end
+  case Linux
+    source (dirname (status --current-filename))/config-linux.fish
+  case '*'
+    source (dirname (status --current-filename))/config-windows.fish
+end
+