Restore config.fish, bump gitignore/utils

files/home/.config/fish/config.fish

@@ -0,0 +1,17 @@
+# Only execute in interactive shell
+if status is-interactive
+
+    # Fish specific
+    set fish_greeting
+    set --global hydro_symbol_prompt "\$"
+    set --global hydro_symbol_git_dirty "~"
+    if type -q base16-seti
+        base16-seti
+    end
+
+    # Cross-shell setup
+    if begin; test -e $HOME/.profile; and type -q replay; end
+        replay "source $HOME/.profile"
+    end
+
+end