[Feature]: include cli version in user-agent

[fredmaggiowski]

Describe the feature

To understand which versions are the most used, it would be nice to have the cli version included in the user-agent header sent by miactl

Current

	-H "User-Agent: miactl (darwin/arm64)"

Desired

	-H "User-Agent: miactl@0.13.0 (darwin/arm64)"
# or - for custom builds -
	-H "User-Agent: miactl@SHA (darwin/arm64)"

Code of Conduct

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