fix!: Style's Width doesn't include border size

[bashbunni]

Describe the bug
When you set a Width on a style, that should encompass the entire styled block. Currently, it will not factor in the border size here, so if a border is set, the actual rendered width is off by 2. This also means that the wrapped text is off by 2 as well.

To Reproduce
Add this to styles_test.go (or any other test file in the repo)

func TestWidth(t *testing.T) {
	width, _, _ := term.GetSize(os.Stdout.Fd())
	content := "The Romans learned from the Greeks that quinces slowly cooked with honey would “set” when cool. The Apicius gives a recipe for preserving whole quinces, stems and leaves attached, in a bath of honey diluted with defrutum: Roman marmalade. Preserves of quince and lemon appear (along with rose, apple, plum and pear) in the Book of ceremonies of the Byzantine Emperor Constantine VII Porphyrogennetos."
	style := NewStyle().Padding(0, 2).Border(NormalBorder(), true)
	t.Log(width)
	t.Log(style.GetHorizontalFrameSize())
	contentWidth := width - style.GetHorizontalFrameSize()
	t.Log(contentWidth)
	rendered := style.Width(contentWidth).Render(content)
	t.Log(Width(rendered))
}

You'll see that contentWidth != Width(rendered)

Expected behavior
contentWidth and Width(rendered) should be the same

Notes
Should also check this is working for Height...