pueue-*: add page (#5285)

pages/common/pueue-kill.md

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+# pueue kill
+
+> Kill running tasks or whole groups.
+> More information: <https://github.com/Nukesor/pueue>.
+
+- Kill all tasks in the default group:
+
+`pueue kill`
+
+- Kill a specific task:
+
+`pueue kill {{task_id}}`
+
+- Kill a task and terminate all its child processes:
+
+`pueue kill --children {{task_id}}`
+
+- Kill all tasks in a group and pause the group:
+
+`pueue kill --group {{group_name}}`
+
+- Kill all tasks across all groups and pause all groups:
+
+`pueue kill --all`