Add MariaDB Document Store integration

[SyedShahmeerAli12]

Add integration tile for mariadb-haystack.

The package is released on PyPI: https://pypi.org/project/mariadb-haystack/
The integration was merged into haystack-core-integrations: deepset-ai/haystack-core-integrations#3565

Closes deepset-ai/haystack-core-integrations#2340

[vercel]

@SyedShahmeerAli12 is attempting to deploy a commit to the deepset Team on Vercel.

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[anakin87]

Let's port here the fixes we made in deepset-ai/haystack#12363

[anakin87]

@kacperlukawski this PR looks good from the content point of view...
Could you please review it?

[kacperlukawski]

Thank you, @SyedShahmeerAli12 I left two comments. Could you please have a look?

[kacperlukawski]

Suggested change

	MariaDB 11.7+ introduced a native `VECTOR` datatype with MHNSW indexing, enabling efficient vector similarity search directly in the database.
	MariaDB 11.7+ introduced a native `VECTOR` datatype with HNSW-based indexing, enabling efficient vector similarity search directly in the database.

I checked their documentation and blog posts, and it seems they use mhnsw, and nhnsw, but from the Haystack user perspective it does not matter that much. I would advice to stay away from the implementation details, given HNSW is a well-known algorithm already.

See:

• https://mariadb.com/docs/server/reference/plugins/other-plugins/mhnsw
• https://mariadb.org/mariadb-vector-how-it-works-part-iii/

[kacperlukawski]

Thank you, @SyedShahmeerAli12 I'll add a logo in a separate PR