cradle-package: add page (#2569)

Author: owenvoke

pages/common/cradle-package.md

@@ -0,0 +1,31 @@
+# cradle package
+
+> Manage packages for a Cradle instance.
+
+- Display a list of available packages:
+
+`cradle package list`
+
+- Search for a package:
+
+`cradle package search {{package}}`
+
+- Install a package from Packagist:
+
+`cradle package install {{package}}`
+
+- Install a specific version of a package:
+
+`cradle package install {{package}} {{version}}`
+
+- Update a package:
+
+`cradle package update {{package}}`
+
+- Update a package to a specific version:
+
+`cradle package update {{package}} {{version}}`
+
+- Remove a specific package:
+
+`cradle package remove {{package}}`