[DOCS] Add guidelines on managing bootnodes for OP Stack Chain Operators

[sbvegan]

Brief Description of the Docs Request

Add guidelines on managing bootnodes for OP Stack chain operators

Description of the Documentation You'd Like

• Information about peer scoring
• How to use the admin rpc or static peering to make sure internal nodes don't accidentally kick them out

Links to Related Pages

• https://docs.optimism.io/builders/chain-operators/management/operations

Additional Context

• This is part of a larger initiative to get open source run books and guidelines on chain operation. Might be worth holding off on this addition until we have a plan for building out the Chain Operator section.
• I've gotten this question from a chain operator