feat: add szeros to namespace

Ref: stdlib-js/metr-issue-tracker#587

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---

Author: kgryte

lib/node_modules/@stdlib/blas/ext/base/lib/index.js

@@ -1944,6 +1944,15 @@ setReadOnly( ns, 'sxsa', require( '@stdlib/blas/ext/base/sxsa' ) );
 */
 setReadOnly( ns, 'szeroTo', require( '@stdlib/blas/ext/base/szero-to' ) );
 
+/**
+* @name szeros
+* @memberof ns
+* @readonly
+* @type {Function}
+* @see {@link module:@stdlib/blas/ext/base/szeros}
+*/
+setReadOnly( ns, 'szeros', require( '@stdlib/blas/ext/base/szeros' ) );
+
 /**
 * @name wasm
 * @memberof ns