Website Issue #161: Replace Twitter sharing w/ Mastodon #164

[MehdiNV]

Description

Resolves https://github.com/kedro-org/kedro-website/issues/161

Sharing to Twitter should be Mastodon instead - this changes the Website to allow users to share to Mastodon going forward

Development notes

• Replaced Twitter logo with Mastodon logo in the 'Share post...' section inside blog posts
• This now shares the blog post onto Mastodon instead of Twitter
• Uses Mastodon Share website to let the user input their Mastodon instance, and include the https://social.lfx.dev/@kedro profile link

QA notes

Clicking the new 'Mastodon' logo now shares it to Mastodon correctly - uses the https://mastodonshare.com/ website to automatically request the user for their instance value

Image Example

What's shared w/ the new button:

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