feat: add unflatten and ndarraylike2scalar to namespace

---
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---

Author: kgryte

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

@@ -576,6 +576,15 @@ setReadOnly( ns, 'mostlySafeCasts', require( '@stdlib/ndarray/mostly-safe-casts'
 */
 setReadOnly( ns, 'ndarraylike2ndarray', require( '@stdlib/ndarray/ndarraylike2ndarray' ) );
 
+/**
+* @name ndarraylike2scalar
+* @memberof ns
+* @readonly
+* @type {Function}
+* @see {@link module:@stdlib/ndarray/ndarraylike2scalar}
+*/
+setReadOnly( ns, 'ndarraylike2scalar', require( '@stdlib/ndarray/ndarraylike2scalar' ) );
+
 /**
 * @name ndims
 * @memberof ns
@@ -1026,6 +1035,15 @@ setReadOnly( ns, 'toRotr90', require( '@stdlib/ndarray/to-rotr90' ) );
 */
 setReadOnly( ns, 'ndarray2string', require( '@stdlib/ndarray/to-string' ) );
 
+/**
+* @name unflatten
+* @memberof ns
+* @readonly
+* @type {Function}
+* @see {@link module:@stdlib/ndarray/unflatten}
+*/
+setReadOnly( ns, 'unflatten', require( '@stdlib/ndarray/unflatten' ) );
+
 /**
 * @name unshift
 * @memberof ns