Add documentation for the new Best Practice Recommender security rules

[rodrigocmoreira]

Make this a new page next to the already existing page about performance recommendations, and update the latter a bit to adapt it to this new structure.

Bring #11851 to the version 10 docs.

[quinntracy]

@rodrigocmoreira I am going to add an info box that @MarkvanMents is adding to the refguide11 version of these docs. In his info box, it states that these security practices were introduced in 11.15.0. Do you know what version of 10.24 these updates will be merged with?

[quinntracy]

@rodrigocmoreira I am going to add an info box that @MarkvanMents is adding to the refguide11 version of these docs. In his info box, it states that these security practices were introduced in 11.15.0. Do you know what version of 10.24 these updates will be merged with?

Never mind, Mark just shared that it is 10.24.27