cli: added -rpcmaxresponsesize to cap HTTP response size #35420

Summary

This is a follow-up to #34342 (comment). This change adds -rpcmaxresponsesize to cap the total response size in bitcoin-cli.

Currently, the MAX_SIZE is uint64_t MAX_SIZE = 0x02000000 or 32 MB. There is a usecase for the user to lower this amount. The user can also set -rpcmaxresponsesize to set the size to be unbounded.

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Code Coverage & Benchmarks

For details see: https://corecheck.dev/bitcoin/bitcoin/pulls/35420.

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Reviews

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Conflicts

Reviewers, this pull request conflicts with the following ones:

• #31260 (scripted-diff: Type-safe settings retrieval by ryanofsky)

If you consider this pull request important, please also help to review the conflicting pull requests. Ideally, start with the one that should be merged first.

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