feat: add gcircshift to namespace

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---

Author: kgryte

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

@@ -243,6 +243,15 @@ setReadOnly( ns, 'dsumors', require( '@stdlib/blas/ext/base/ndarray/dsumors' ) )
 */
 setReadOnly( ns, 'dsumpw', require( '@stdlib/blas/ext/base/ndarray/dsumpw' ) );
 
+/**
+* @name gcircshift
+* @memberof ns
+* @readonly
+* @type {Function}
+* @see {@link module:@stdlib/blas/ext/base/ndarray/gcircshift}
+*/
+setReadOnly( ns, 'gcircshift', require( '@stdlib/blas/ext/base/ndarray/gcircshift' ) );
+
 /**
 * @name gcusum
 * @memberof ns