Add Component Tag Helper doc to explain rendering Razor components in pages and views

[guardrex]

Fixes #17160

Internal Review Topic

Thanks @mrlife! 🎷

[guardrex]

@mkArtakMSFT I slept on it before final merge, and I think we need a full example of the component for passing parameters. I pass an int and and string to demo the object concept, so I've added a ColorfulCheckbox component that uses those params. See if what's shown looks good, or do you have an alternative example idea ... perhaps something other than a check box.

[guardrex]

Let's go ahead ... the check box example is ok (it works lol) for now.