sagemathgh-39317: add parameter immutable to all methods in `sage/gra…

…phs/generators/basic.py`

    
Following discussions in sagemath#39177, we add parameter `immutable` to all
methods in `sage/graphs/generators/basic.py`.
We also add parameter `name` to some methods to ease constructions.

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### ⌛ Dependencies

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URL: sagemath#39317
Reported by: David Coudert
Reviewer(s): Dima Pasechnik