add blockquote button to demo

examples/Components/Routes/Basic/index.vue

@@ -93,6 +93,14 @@
 						<icon name="ol" />
 					</button>
 
+					<button
+						class="menubar__button"
+						:class="{ 'is-active': nodes.blockquote.active() }"
+						@click="nodes.blockquote.command"
+					>
+						<icon name="quote" />
+					</button>
+
 					<button
 						class="menubar__button"
 						:class="{ 'is-active': nodes.code_block.active() }"

examples/assets/images/icons/quote.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><title>close-quote</title><path d="M18.559,3.932a4.942,4.942,0,1,0,0,9.883,4.609,4.609,0,0,0,1.115-.141.25.25,0,0,1,.276.368,6.83,6.83,0,0,1-5.878,3.523,1.25,1.25,0,0,0,0,2.5,9.71,9.71,0,0,0,9.428-9.95V8.873A4.947,4.947,0,0,0,18.559,3.932Z"/><path d="M6.236,3.932a4.942,4.942,0,0,0,0,9.883,4.6,4.6,0,0,0,1.115-.141.25.25,0,0,1,.277.368A6.83,6.83,0,0,1,1.75,17.565a1.25,1.25,0,0,0,0,2.5,9.711,9.711,0,0,0,9.428-9.95V8.873A4.947,4.947,0,0,0,6.236,3.932Z"/></svg>