Warn on ignored request flags during inspect modes

[ryanfowler]

Summary

• Update --inspect-dns and --inspect-tls to warn with clearer wording when request-only CLI flags are supplied.
• Expand the ignored-flag detection to cover additional request, transport, formatting, and WebSocket options.
• Keep config-file defaults from triggering the warning so only explicit CLI flags are reported.
• Refresh docs to describe the new warning behavior.

Testing

• Added integration coverage for both inspection modes, including explicit CLI flags and config-backed defaults.
• Verified the new warning text and ensured the older --inspect-*- ignores wording no longer appears.
• Existing inspection behavior remains unchanged when no ignored CLI flags are present.