Document full list of features in `add_theme_support` docblock

[isabel_brison]

Follow up from #60118.

There are a few features currently missing from the list: border, block-templates and block-template-parts. Would be good to search the codebase for any others that might have snuck in and add them all :)

[up1512001]

Hey, @mukesh27 I want to work on this ticket if its not assign to anyone.

[up1512001]

Replying to isabel_brison:

Follow up from #60118.

There are a few features currently missing from the list: border, block-templates and block-template-parts. Would be good to search the codebase for any others that might have snuck in and add them all :)

I have added all theme support list here please check if any support still missing.

1. admin-bar
2. align-wide
3. appearance-tools
4. automatic-feed-links
5. block-template-parts
6. block-templates
7. border
8. core-block-patterns
9. custom-background
10. custom-header
11. custom-line-height
12. custom-logo
13. custom-spacing
14. customize-selective-refresh-widgets
15. custom-units
16. dark-editor-style
17. disable-custom-colours
18. disable-custom-font-sizes
19. disable-custom-gradients
20. disable-layout-styles
21. editor-color-palette
22. editor-font-sizes
23. editor-gradient-presets
24. editor-styles
25. featured-content
26. html5
27. link-color
28. menus
29. post-formats
30. post-thumbnails
31. responsive-embeds
32. starter-content
33. title-tag
34. widgets
35. widgets-block-editor
36. wp-block-styles

@isabel_brison @mukesh27

Trac ticket: https://core.trac.wordpress.org/ticket/60221

• This PR will update docblock for add_theme_support() of theme.php file.

### Updated param list.

* @param string $feature The feature being added. Likely core values include:
 *                          - 'admin-bar'
 *                          - 'align-wide'
 *                          - 'appearance-tools'
 *                          - 'automatic-feed-links'
 *                          - 'block-template-parts'
 *                          - 'block-templates'
 *                          - 'border'
 *                          - 'core-block-patterns'
 *                          - 'custom-background'
 *                          - 'custom-header'
 *                          - 'custom-line-height'
 *                          - 'custom-logo'
 *                          - 'customize-selective-refresh-widgets'
 *                          - 'custom-spacing'
 *                          - 'custom-units'
 *                          - 'dark-editor-style'
 *                          - 'disable-custom-colors'
 *                          - 'disable-custom-font-sizes'
 *                          - 'disable-custom-gradients'
 *                          - 'disable-layout-styles'
 *                          - 'editor-color-palette'
 *                          - 'editor-gradient-presets'
 *                          - 'editor-font-sizes'
 *                          - 'editor-styles'
 *                          - 'featured-content'
 *                          - 'html5'
 *                          - 'link-color'
 *                          - 'menus'
 *                          - 'post-formats'
 *                          - 'post-thumbnails'
 *                          - 'responsive-embeds'
 *                          - 'starter-content'
 *                          - 'title-tag'
 *                          - 'wp-block-styles'
 *                          - 'widgets'
 *                          - 'widgets-block-editor'

Hey @mukeshpanchal27 could you please look into this PR?

@up1512001 left one review feedback.

[swissspidy]

@isabel_brison @poena Are you perhaps able to double check some of the version numbers in ​https://github.com/WordPress/wordpress-develop/pull/6025?

[isabel_brison]

In 57573:

Themes: update add_theme_support docblock.

Adds missing features to the list for the $feature parameter in add_theme_support().

Props up1512001, mukesh27, swissspidy, isabel_brison.
Fixes #60221.

Committed in r57573.