feat: Show Similiar blog posts

[linkdotnet]

Adding a feature where 3 related blog posts are shown under the main blog post.
This is done by a new background job that calculates similar blog posts and puts them into a new table.
Those entries are then shown.

[linkdotnet]

CC @sa-es-ir

EDIT: Hey Saeed - I am in the midst of pushing a new feature that allows readers to read articles that are related.
This is done by a similarity matrix that will be updated when a blog post is created/updated.
Currently, the default is that the user has to expand the area to see related articles, but I could also expand this by default.

The algorithm takes title, short description and tags into account and not the main content (at least as of now).

[sa-es-ir]

@linkdotnet Thanks for letting me know, it's a cool feature. A quick question, since there is a new table added, is there anything I need to consider to update the database with old data?

[linkdotnet]

No, it just needs that new table (if you use a SQL Database, you can basically grab the query from the MIGRATION.md and add the new entry to your appsettings.json).

The similarity matrix is built every time a blog post is published or updated. Therefore, just updating a blog post without editing it will trigger everything.

[linkdotnet]

It is v1 of the Tokenzier and Vectorizer - so results may vary ;)
I will work on improving the nits and bits, but the general structure should stay the same.