Added Strands Agents sample

[brianstrauch]

What changed

Added a complete set of samples for the Temporal TypeScript SDK's Strands integration, mirroring the Python samples in samples-python/strands_plugin.

Features demonstrated:

• Hello World — minimal TemporalAgent invocation
• Tools — pure Strands tool() + workflow.activityAsTool for I/O
• Human in the Loop — gate a tool call on human approval via BeforeToolCallEvent hook + event.interrupt()
• Activity Interrupt — activity-thrown interrupt routed through StrandsFailureConverter
• Hooks — AfterToolCallEvent with in-workflow and activity-dispatched callbacks
• MCP — stdio MCP server via TemporalMCPClient
• Structured Output — Zod schema constrained output
• Streaming — model chunk forwarding via WorkflowStream
• Continue as New — long-lived chat with history-aware continue-as-new

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