added some extra social icons

[aezazs-multidots]

What?

We have added Bitbucket, Slack, Messenger, and Whatsapp social icons to the social icons block.

Why?

Because there are many social icons, they are not included in the social icons blocks. And those social icons are getting used a lot in the WordPress website. so I have added some social icons.

Testing Instructions

Select Block Social Icons on any page or post.
Now you can select and use the icons which we have added.

Screenshots or screencast

I have added social icons, its video link is given below.
https://www.loom.com/share/d232bbf6c1ad4ea5b8a456c375c6f217

[github-actions]

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[jasmussen]

Thanks for the PR. As a completely personal opinion, I'm reluctant to add more icons:

• Logos change, and it's a maintenance burden to keep up with the designs, and frustrating having to wait for an icon to be updated if it becomes out of date
• Often logos have design guidelines attached to their usage, for example disallowing their use without the accurate brand color, rules which are hard or impossible for the block to uphold.
• We can't add all icons in the world, making it all the harder to decide between which icons we do add, and which icons we choose not to.

In that light, my hope lies with #19041, creating a basic extension architecture making it trivial for anyone to add the icons of their choice.

[audunmb]

The Social icons block is just a row of icons. Just replace the whole thing with something based on The Icon Block and place SVG Icons in a row.

No need to maintain a lot of icons or links, leave that to admins and theme developers, and people can add and modify whatever icons they want.

A standard pattern with a row of the most used social icons could replace the current block for backwards compatability.