Adds wpAdminUrl hook

[theodesp]

Tasks

• I have signed a Contributor License Agreement (CLA) with WP Engine.
• If a code change, I have written testing instructions that the whole team & outside contributors can understand.
• I have written and included a comprehensive changeset to properly document the changes I've made.

Description

This PR adds a new hook called wpAdminUrl that lets users alter the wp-admin url.

Related Issue(s):

#1882

Testing

1. Add the following plugin hook into the example project:

import { setConfig } from '@faustwp/core';
import templates from './wp-templates';
import possibleTypes from './possibleTypes.json';

import { FaustHooks, FaustPlugin } from '@faustwp/core';

export class MyPlugin {
  apply(hooks) {
    const { addAction, addFilter } = hooks;

    addFilter(
      'wpAdminUrl',
      'my-namespace',
      (wpAdminUrl, context) => {
        console.debug('wpAdminUrl', wpAdminUrl);
        return wpAdminUrl.replace('/wp-admin', '/wp/wp-admin')
      },
    );
  }
}
/**
 * @type {import('@faustwp/core').FaustConfig}
 **/
export default setConfig({
  templates,
  plugins: [new MyPlugin()],
  experimentalToolbar: true,
  possibleTypes,
});

2. Open the example project site and review the toolbar url. It should show the updated path:

/wp/wp-admin/admin.php?page=graphiql-ide

Screenshots

Documentation Changes

Needs to add entry in https://faustjs.org/reference/faust-plugin-system-filters

Dependant PRs

[changeset-bot]

🦋 Changeset detected

Latest commit: 003e757

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@faustwp/core	Patch

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[github-actions]

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