Automatically generate promscale cli flag documentation

[arajkumar]

Describe the bug Currently we manually update cli flag documentation present in promscale repo and timescale docs repo. It is better to keep single copy(only in timescale docs) instead of 2 and automate the process of creating the doc.

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Expected behavior <A clear and concise description of what you expected to happen.>

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Configuration (as applicable)

• Promscale Connector:
• TimescaleDB:
• Prometheus:
• Jaeger:
• OpenTelemetry:

Version

• Distribution/OS:
• Promscale:
• TimescaleDB:

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