feat: add toRotl90 to namespace

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---

Author: kgryte

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

@@ -1552,6 +1552,15 @@ setReadOnly( ns, 'toReversedDimension', require( '@stdlib/ndarray/base/to-revers
 */
 setReadOnly( ns, 'toRot90', require( '@stdlib/ndarray/base/to-rot90' ) );
 
+/**
+* @name toRotl90
+* @memberof ns
+* @readonly
+* @type {Function}
+* @see {@link module:@stdlib/ndarray/base/to-rotl90}
+*/
+setReadOnly( ns, 'toRotl90', require( '@stdlib/ndarray/base/to-rotl90' ) );
+
 /**
 * @name toRotr90
 * @memberof ns