feat(fish): add some plugins, update functions

.config/fish/functions/_puffer_fish_expand_dots.fish

@@ -0,0 +1,9 @@
+function _puffer_fish_expand_dots -d 'expand ... to ../.. etc'
+    set -l cmd (commandline --cut-at-cursor)
+    set -l split (string split -- ' ' $cmd)
+    if string match --quiet --regex -- '^(\.\./)*\.\.$' $split[-1]
+        commandline --insert '/..'
+    else
+        commandline --insert '.'
+    end
+end