feat: add planck and bradford distributions to namespace

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---

Author: Planeshifter

lib/node_modules/@stdlib/stats/base/dists/lib/index.js

@@ -81,6 +81,15 @@ setReadOnly( dist, 'betaprime', require( '@stdlib/stats/base/dists/betaprime' )
 */
 setReadOnly( dist, 'binomial', require( '@stdlib/stats/base/dists/binomial' ) );
 
+/**
+* @name bradford
+* @memberof dist
+* @readonly
+* @type {Namespace}
+* @see {@link module:@stdlib/stats/base/dists/bradford}
+*/
+setReadOnly( dist, 'bradford', require( '@stdlib/stats/base/dists/bradford' ) );
+
 /**
 * @name cauchy
 * @memberof dist
@@ -289,6 +298,15 @@ setReadOnly( dist, 'normal', require( '@stdlib/stats/base/dists/normal' ) );
 */
 setReadOnly( dist, 'pareto1', require( '@stdlib/stats/base/dists/pareto-type1' ) );
 
+/**
+* @name planck
+* @memberof dist
+* @readonly
+* @type {Function}
+* @see {@link module:@stdlib/stats/base/dists/planck}
+*/
+setReadOnly( dist, 'planck', require( '@stdlib/stats/base/dists/planck' ) );
+
 /**
 * @name poisson
 * @memberof dist