feat: add Admin API endpoints for CmsPage

[axel-paillaud]

PR Description — Add Admin API endpoints for CmsPage

Questions	Answers
Description?	Add Admin API endpoints for CmsPage entity: POST (create), GET (single), PATCH (update), PATCH (toggle-status), DELETE (single), DELETE (bulk), PUT (bulk enable), PUT (bulk disable).
Type?	new feature
BC breaks?	no
Deprecations?	no
Fixed ticket?	N/A
Sponsor company	N/A
How to test?	Call POST /api/cms-pages?shopId=1 with a valid Bearer token and body (see below). Expect 201 with the created entity. Then call GET /api/cms-pages/{cmsPageId} and expect 200 with the full entity.

Dependencies

This PR requires the following core fixes to be merged first:

• fix: cast bool fields in GetCmsPageForEditingHandler #41128
• fix, if you want multistore working: guard against null employee in AbstractObjectModelHandler::associateWithShops() #41130

Sample POST body

{
  "cmsPageCategoryId": 1,
  "titles": { "en-US": "My CMS Page", "fr-FR": "Ma page CMS" },
  "metaTitles": { "en-US": "Meta title", "fr-FR": "Meta titre" },
  "metaDescriptions": { "en-US": "Meta description", "fr-FR": "Meta description" },
  "friendlyUrls": { "en-US": "my-cms-page", "fr-FR": "ma-page-cms" },
  "contents": { "en-US": "<p>Content</p>", "fr-FR": "<p>Contenu</p>" },
  "indexedForSearch": true,
  "enabled": true,
  "shopIds": [1]
}

Endpoints added

Method	URI	Scope
POST	/cms-pages	cms_page_write
GET	/cms-pages/{cmsPageId}	cms_page_read
PATCH	/cms-pages/{cmsPageId}	cms_page_write
PUT	/cms-pages/{cmsPageId}/toggle-status	cms_page_write
DELETE	/cms-pages/{cmsPageId}	cms_page_write
DELETE	/cms-pages/bulk-delete	cms_page_write
PUT	/cms-pages/bulk-enable	cms_page_write
PUT	/cms-pages/bulk-disable	cms_page_write

[ps-jarvis]

Hello @axel-paillaud!

This is your first pull request on ps_apiresources repository of the PrestaShop project.

Thank you, and welcome to this Open Source community!

[axel-paillaud]

Everything has been tested end-to-end (Bruno API client) and with PHP Unit unit tests

[nicosomb]

@axel-paillaud the CI is red, could you have a look please?

[axel-paillaud]

@nicosomb This PR need 41128 to work, otherwise we have : The type of the \"indexedForSearch\" attribute must be \"bool\", \"string\" given