Implement OTA Software Update file packer

[BroderickCarlin]

Problem

The CHIP spec defines a standardized header to be required by all CHIP OTA Software Update files. Currently there is no tool available that a manufacturer or developer may use to prepend these headers to their OTA image

Proposed Solution

Add functionality to either existing CLI tool(s) or create a new CLI tool capable of prepending the standardized CHIP OTA headers to a provided OTA image. This tool should support any/all optional fields and functionality as defined by the CHIP spec.

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