feat: add vconcat to namespace

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
  - task: lint_filenames
    status: passed
  - task: lint_editorconfig
    status: passed
  - task: lint_markdown
    status: na
  - task: lint_package_json
    status: na
  - task: lint_repl_help
    status: na
  - task: lint_javascript_src
    status: passed
  - task: lint_javascript_cli
    status: na
  - task: lint_javascript_examples
    status: na
  - task: lint_javascript_tests
    status: na
  - task: lint_javascript_benchmarks
    status: na
  - task: lint_python
    status: na
  - task: lint_r
    status: na
  - task: lint_c_src
    status: na
  - task: lint_c_examples
    status: na
  - task: lint_c_benchmarks
    status: na
  - task: lint_c_tests_fixtures
    status: na
  - task: lint_shell
    status: na
  - task: lint_typescript_declarations
    status: passed
  - task: lint_typescript_tests
    status: na
  - task: lint_license_headers
    status: passed
---

Author: kgryte

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

@@ -963,6 +963,15 @@ setReadOnly( ns, 'ndarray2string', require( '@stdlib/ndarray/to-string' ) );
 */
 setReadOnly( ns, 'unshift', require( '@stdlib/ndarray/unshift' ) );
 
+/**
+* @name vconcat
+* @memberof ns
+* @readonly
+* @type {Namespace}
+* @see {@link module:@stdlib/ndarray/vconcat}
+*/
+setReadOnly( ns, 'vconcat', require( '@stdlib/ndarray/vconcat' ) );
+
 /**
 * @name vector
 * @memberof ns