yarn: add aliases for common commands

Fixes #5722
Fixes #5864
Fixes #5920
Fixes #6566
Fixes #6579
Fixes #6686
Fixes #6740

plugins/yarn/yarn.plugin.zsh

-alias y="yarn "
+alias y="yarn"
 alias ya="yarn add"
+alias yad="yarn add --dev"
+alias yap="yarn add --peer"
+alias yb="yarn build"
 alias ycc="yarn cache clean"
+alias ygu="yarn global upgrade"
 alias yh="yarn help"
+alias yin="yarn install"
+alias yls="yarn list"
 alias yout="yarn outdated"
+alias yrm="yarn remove"
+alias yrun="yarn run"
+alias yst="yarn start"
+alias yt="yarn test"
+alias yuc="yarn global upgrade && yarn cache clean"
 alias yui="yarn upgrade-interactive"
+alias yup="yarn upgrade"