pixi, pixi-{config,global,project,task}: add page (#13249)

pages/common/pixi-global.md

@@ -0,0 +1,24 @@
+# pixi global
+
+> Manage global packages.
+> More information: <https://pixi.sh/latest/reference/cli/#global>.
+
+- Install a package globally and add to path:
+
+`pixi global install {{package1 package2 ...}}`
+
+- Uninstall a package globally:
+
+`pixi global remove {{package1 package2 ...}}`
+
+- List all globally installed packages:
+
+`pixi global list`
+
+- Update a globally installed package:
+
+`pixi global upgrade {{package}}`
+
+- Update all globally installed packages:
+
+`pixi global upgrade-all`