feat: add rot180 to namespace

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
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    status: passed
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    status: passed
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    status: passed
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    status: passed
---

Author: kgryte

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

@@ -738,6 +738,15 @@ setReadOnly( ns, 'reverseDimension', require( '@stdlib/ndarray/reverse-dimension
 */
 setReadOnly( ns, 'rot90', require( '@stdlib/ndarray/rot90' ) );
 
+/**
+* @name rot180
+* @memberof ns
+* @readonly
+* @type {Function}
+* @see {@link module:@stdlib/ndarray/rot180}
+*/
+setReadOnly( ns, 'rot180', require( '@stdlib/ndarray/rot180' ) );
+
 /**
 * @name rotr90
 * @memberof ns