feat(vim): add config

config/vim/vimrc

@@ -0,0 +1,10 @@
+set directory=$XDG_CACHE_HOME/vim,~/.cache/vim,/tmp/vim
+set backupdir=$XDG_CACHE_HOME/vim,~/.cache/vim,/tmp/vim
+set viminfo+=n{XDG_CACHE_HOME/vim/viminfo
+set runtimepath=$XDG_CONFIG_HOME/vim,$XDG_CONFIG_HOME/vim/after,$VIM,$VIMRUNTIME
+let $MYVIMRC="$XDG_CONFIG_HOME/vim/vimrc"
+
+augroup myvimrc_hooks
+    au!
+    autocmd bufwritepost vimrc source $MYVIMRC
+augroup END