feat: add bternary3d to namespace

---
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---

Author: kgryte

lib/node_modules/@stdlib/array/base/lib/index.js

@@ -378,6 +378,15 @@ setReadOnly( ns, 'bquinary4d', require( '@stdlib/array/base/broadcasted-quinary4
 */
 setReadOnly( ns, 'bternary2d', require( '@stdlib/array/base/broadcasted-ternary2d' ) );
 
+/**
+* @name bternary3d
+* @memberof ns
+* @readonly
+* @type {Function}
+* @see {@link module:@stdlib/array/base/broadcasted-ternary3d}
+*/
+setReadOnly( ns, 'bternary3d', require( '@stdlib/array/base/broadcasted-ternary3d' ) );
+
 /**
 * @name bunary2d
 * @memberof ns