Prepare version 2.5

[zoglo]

Additions

• Minimum PHP Version is now xx
• The base template now uses the HtmlAttributes class
• Adjusted the base template to allow modifying attributes, inside_attributes and the inside_tag_name

Changes

The following rsce content elements have been generalized and replaced with twig templates:

• rsce_hyperlink
• rsce_icon
• rsce_icon_text
• rsce_icon_text_list
• rsce_image_list
• rsce_image_text_list
• rsce_text
• rsce_text_list

Deprecations

The following legacy classes have been deprecated and will be removed in Version 3, use the replacement instead.

• c_text -> content--text
• ce_headline -> content--headline
• ce_text -> content-text
• ce_list -> content-list
• ce_image -> content-image
• ce_youtube -> content-youtube
• ce_vimeo -> content-vimeo
• ce_rsce_hyperlink_list -> content-rsce-hyperlink-list
• ce_rsce_icon -> content-rsce-icon
• ce_rsce_icon_text -> content-rsce-icon-text
• ce_rsce_icon_text_list -> content-rsce-icon-text-list
• ce_rsce_image_list -> content-rsce-image-list
• ce_rsce_image_text -> content-rsce-image-text
• ce_rsce_image_text_list -> content-rsce-image-text-list
• ce_rsce_text -> content-rsce-text
• ce_rsce_text_list -> content-rsce-text-list

[zoglo]

This PR is dependent on oveleon/contao-component-style-manager#125

The necessary commit has been cherry picked and released in 3.11.3:
https://github.com/oveleon/contao-component-style-manager/releases/tag/3.11.3