text-{size}-(start/end) as well as text-{size}-(right/center/left)

Created by: fisharebest

In scss/utilities/_text.scss, we have three text alignment options

    .text#{$infix}-left   { text-align: left !important; }
    .text#{$infix}-right  { text-align: right !important; }
    .text#{$infix}-center { text-align: center !important; }

Can we add two more?

    .text#{$infix}-start { text-align: start !important; }
    .text#{$infix}-end   { text-align: end !important; }

This will be a great help for sites that support both LTR and RTL languages. Here, we generally need to align to the start/end, not necessarily the left/right.

A typical use case might be to align form labels with their inputs.

	<div class="row form-group">
		<label class="col-sm-3 col-form-label text-sm-end">
			XXX
		</label>
		<div class="col-sm-9">
			<input type="text" class="form-control">
		</div>
	</div>