add onboarding materials

[hadar-co]

Description

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context.

Added docs pages

Please also include the path for the added docs

• Quickstart (/)
• Blueprint (/platform-overview/port-components/blueprint)
• ...

Updated docs pages

Please also include the path for the updated docs

• Quickstart (/)
• Blueprint (/platform-overview/port-components/blueprint)
• ...

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