feat: Add hard timeout support to container startup

[Talador12]

• Add hardTimeoutMs to StartupOptions struct
• Implement hard timeout RPC call during container.start()
• Add setHardTimeout @8 method to container.capnp schema
• Hard timeout is absolute from startup, unlike inactivity timeout

[github-actions]

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[Talador12]

I have read the CLA Document and I hereby sign the CLA

[gabivlj]

lgtm pending tests passing

[codspeed-hq]

CodSpeed Performance Report

Merging #5280 will improve performances by 14.95%

_{Comparing Talador12:feature/hard-timeout-startup (5c6a9de) with main (0a9873d)}

Summary

⚡ 1 improvement
✅ 32 untouched
⏩ 9 skipped¹

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
⚡	Encode_ASCII_32[0/0/32]	3.6 ms	3.1 ms	+14.95%

Footnotes

1. 9 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[emily-shen]

+1 for reverting the string parsing as its inconsistent with setInactivityTimeout. we can do this one layer up in js like we do for setInactivityTimeout.