Improve suggestion text clarity when printing ErrorWithSuggestion

[JeffreyCA]

Originally posted by @ellismg in #4585 (comment):

One of the things that jumped out at me with them (which I don't think is a problem introduced by this PR) is that the suggestion text is sort of hard to find, especially with the large amount of red text before.

In a future PR we might want to introduce some whitespace (and maybe some color?) to help it pop a little more - just my two cents.

The place where this happens is in:

azure-dev/cli/azd/cmd/middleware/ux.go

Lines 46 to 48 in 84b605c

	if errors.As(err, &suggestionErr) {
	m.console.Message(ctx, suggestionErr.Suggestion)
	}

I think to customize this we could use one of the pre-defined text formats in colors.go or possibly define a new format for error suggestions:

Current

With newline

Bold

Italics

Underline

Warning