Add ExactMatch flag to packages API

[PulsarFX]

Feature Description

Currently the API for /packages/{owner} localhost:3000/api/swagger/package/listPackages
(Gets all packages of an owner)
is defined with the following parameters:

• page number
• limit items
• type of package
• q name filter

The problem is, that the name filter is treated with the LIKE operator. There is no way to do an exact name search.

-> Please add a flag to do an exact name search.

Background:
Our repository is very, very big with lots of nuget packages (100k packages and counting) that share parts of the same name, like a base package package.name.part and lots of specialized packages like package.name.part.subA, package.name.part.subB, ...

there is no way to filter for package.name.part, as it will always include all other packages aswell. This makes it impossible to do a performant lookup of what is present in the registry. Or is there?
Currently I query the whole registry which takes about 5 minutes to finish using package/listPackages with not q filter and do the grouping in code.
Earlier I used the nuget api directly, but it is much slower than listPackages.

-> It would be nice to have an API where the latest version of each package could be fetched, and then an API to get all versions of an package.

Screenshots

No response

[KN4CK3R]

Added with #34173.