Go initialized new expression

<div class="visual pointer" data-step="0"><div class="visual-head"><strong>GO NEW(EXPR)</strong><i></i></div><div class="visual-scene"><div class="ptr-expression mono">new(42)</div><div class="ptr-arrow">→</div><div class="ptr-memory"><small>memory</small><strong>42</strong></div><div class="ptr-arrow">←</div><div class="ptr-ref mono">*int</div></div><div class="visual-caption"></div><div class="visual-dots"><b></b><b></b><b></b><b></b></div></div>

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