brew-{update,upgrade,list,outdated,search}: add page (#11389)

* brew-update: add page

* brew-upgrade: add page

* brew-list: add page

* brew-outdated: add page

* brew-search: add page

pages/common/brew-upgrade.md

@@ -0,0 +1,16 @@
+# brew upgrade
+
+> Upgrade outdated formulae and casks.
+> More information: <https://docs.brew.sh/Manpage#upgrade-options-outdated_formulaoutdated_cask->.
+
+- Upgrade all outdated casks and formulae:
+
+`brew upgrade`
+
+- Upgrade a specific formula/cask:
+
+`brew upgrade {{formula|cask}}`
+
+- Print what would be upgraded, but don't actually upgrade anything:
+
+`brew upgrade --dry-run`