feat: added up_message and down_message to [uptimerobotstatus]

[filipgrudzien]

closes #8816

[github-actions]

	Warnings
⚠️	This PR modified service code for uptimerobot but not its test code. That's okay so long as it's refactoring existing code.

	Messages
📖	✨ Thanks for your contribution to Shields, @filipgrudzien!

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[chris48s]

Thanks. Could we also implement the up_color and down_color params.

Also, we'll need to add them to the documentation, but you can ignore that in this PR.
I'll deal with it as part of #9612

[filipgrudzien]

Thanks. Could we also implement the up_color and down_color params.

Also, we'll need to add them to the documentation, but you can ignore that in this PR. I'll deal with it as part of #9612

Thanks. Could we also implement the up_color and down_color params.

Also, we'll need to add them to the documentation, but you can ignore that in this PR. I'll deal with it as part of #9612

Could You please review it, so we can merge it???