brew-{update,upgrade,list,outdated,search}: add page (#11389)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* brew-outdated: add page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pages/common/brew-outdated.md

@@ -0,0 +1,17 @@
+# brew outdated
+
+> List outdated casks and formulae.
+> To upgrade everything, use `brew upgrade`.
+> More information: <https://docs.brew.sh/Manpage#outdated-options-formulacask->.
+
+- List all outdated casks and formulae:
+
+`brew outdated`
+
+- List only outdated formulae:
+
+`brew outdated --formula`
+
+- List only outdated casks:
+
+`brew outdated --cask`