Added class and os alternates

.oh-my-zsh/plugins/swiftpm/swiftpm.plugin.zsh

@@ -0,0 +1,8 @@
+# Some aliases to make your life with the Swift Package Manager faster ✌️
+
+alias spi='swift package init'
+alias spf='swift package fetch'
+alias spu='swift package update'
+alias spx='swift package generate-xcodeproj'
+alias sps='swift package show-dependencies'
+alias spd='swift package dump-package'