[DOCS] Best practices guide for node config

[cpengilly]

Brief Description of the Docs Request

We need a best practices guide for node configurations to better educate node and chain ops

Description of the Documentation You'd Like

We don't have any best practices guides in the docs set yet, so this will also serve as a starter/template for other such guides. Node operators need this. I'd imagine that chain operators would be next 💟

Links to Related Pages

base config - https://docs.optimism.io/builders/node-operators/configuration/base-config
consensus config - https://docs.optimism.io/builders/node-operators/configuration/consensus-config
execution config - https://docs.optimism.io/builders/node-operators/configuration/execution-config
how to run a node in superchain - https://docs.optimism.io/builders/node-operators/rollup-node - link out to the new best practice guide from this page