chore: fish: migrate back to nvm

config/fish/functions/nvm_alias_function.fish

@@ -0,0 +1,28 @@
+function nvm_alias_function -d "Create an alias function"
+  function __create_alias_function
+    if test -e "$argv[1]"
+      set_color yellow
+      echo "Ignored: $argv[1] (already exists)"
+      set_color normal
+      return 0
+    else
+      set -l line1 "function COMMAND -w COMMAND"
+      set -l line2 "__nvm_run \"COMMAND\" \$argv"
+      echo (string replace -a COMMAND $argv[2] $line1) > $argv[1]
+      echo (string replace COMMAND $argv[2] $line2) >> $argv[1]
+      echo "end" >> $argv[1]
+      return 0
+    end
+  end
+
+  if test (count $argv) -le 0
+    set_color yellow
+    echo "Please specify package(s) name(s)"
+    set_color normal
+    return 1
+  else
+    for arg in $argv
+      __create_alias_function "$fish_function_path[1]/$arg.fish" $argv
+    end
+  end
+end