Add support escalation tool call for inkeep

[sarah-inkeep]

[!IMPORTANT] Adds a tool function to assess AI answer confidence and escalate to human support if needed, with schema and dependency updates.

• Behavior:
  • Adds provideAnswerConfidenceSchema in answerConfidence.tsx to define confidence levels for AI responses.
  • Updates useInkeepSettings.ts to include a new tool function provideAnswerConfidence that uses the schema to determine if escalation to human support is needed.
  • Adds a button to create a support ticket if confidence is low (not_confident, no_sources, other).
• Dependencies:
  • Updates @inkeep/cxkit-react version in package.json from ^0.5.47 to ^0.5.52.

^{This description was created by for b52d017735730c390b890cfd555168a1ceaebd4f. It will automatically update as commits are pushed.}

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