Enhancement: add `data` property to `customContent.createCustomContent`

[MrRefactoring]

This issue tracks the need to enhance the customContent.createCustomContent method by including a data property. The data property should have the following structure:

data: {
  type: parameters.type, // Required field of type string
  status: parameters.status, // Optional field of type string
  spaceId: parameters.spaceId, // Optional field of type string
  pageId: parameters.pageId, // Optional field of type string
  blogPostId: parameters.blogPostId, // Optional field of type string
  customContentId: parameters.customContentId, // Optional field of type string
  title: parameters.title, // Required field of type string
  body: parameters.body, // Required field one of [CustomContentBodyWrite, CustomContentNestedBodyWrite] type
}

PR should include also typings for type, status, spaceId, pageId, blogPostId, customContentId, title, body

Reference: For more context and detailed information, please refer to the Confluence REST API documentation.