feat: lots of changes, wrote own fish theme

fish_setup.sh

@@ -0,0 +1,31 @@
+#!/bin/bash
+
+# install fisher
+curl https://git.io/fisher --create-dirs -sLo ~/.config/fish/functions/fisher.fish
+
+# copy fish config
+if test -f "~/.config/fish/config.fish"; then
+    echo "config.fish already exist, please rename to continue."
+    exit 1
+fi
+cp fish/config.fish ~/.config/fish/
+
+# copy fishfile
+if test -f "~/.config/fish/fishfile"; then
+    echo "fishfile already exist, please rename to continue."
+    exit 1
+fi
+cp fish/fishfile ~/.config/fish/
+
+# install packages from fishfile
+fish -c "fisher self-update"
+fish -c fisher
+fish -c "fisher add (pwd)/fish/theme-t31m"
+
+# customize theme / prompt
+cp dot.config/fish/functions/* ~/.config/fish/functions
+
+# set fish default promt
+chsh -s /usr/bin/fish
+
+cp dot.vimrc ~/.vimrc