feat: add unaryInputCastingDataType to namespace

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---

Author: kgryte

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

@@ -940,6 +940,15 @@ setReadOnly( ns, 'unaryAccumulate', require( '@stdlib/ndarray/base/unary-accumul
 */
 setReadOnly( ns, 'unaryBy', require( '@stdlib/ndarray/base/unary-by' ) );
 
+/**
+* @name unaryInputCastingDataType
+* @memberof ns
+* @readonly
+* @type {Function}
+* @see {@link module:@stdlib/ndarray/base/unary-input-casting-dtype}
+*/
+setReadOnly( ns, 'unaryInputCastingDataType', require( '@stdlib/ndarray/base/unary-input-casting-dtype' ) );
+
 /**
 * @name unaryLoopOrder
 * @memberof ns