[TASK] add new social-sharing module

[pxamike]

New Pull Request checklist

Please check if your PR fulfills the following requirements

• Contributing: https://github.com/resultify/.github/blob/master/CONTRIBUTING.md
• Coding Rules: https://github.com/resultify/.github/blob/master/CONTRIBUTING.md#coding-rules
• Commit message conventions: https://github.com/resultify/.github/blob/master/CONTRIBUTING.md#commit-message-guidelines

PR Type

What kind of change does this PR introduce?

• [FEATURE] - A new feature
• [BUGFIX] - A bug fix
• [TASK] - Any task, which is not a new feature or bugfix
• [TEST] - Adding missing tests
• [DOC] - Documentation only changes
• [WIP] - Work in progress tag, should not be present when creating pull requests

Breaking change

Does this PR introduce a breaking change?

• Yes
• No

Issue references

Issue Number: #...

Description

Based on (Nimbly) social-links and (HubSpot) social-share module.
Makes it possible to share the current page on Facebook, X, LinkedIn, Pinterest and e-mail and uses the same social icons and styling possibilities as social-links.

• Replaces the {%blog_social_sharing%} in blog-post template
• example here: http://144496812.hs-sites-eu1.com/blog/exploring-the-vibrant-culture-of-supporter-house