Sort addons less prominently than applications

[aleixpol]

Otherwise we get a bunch of addons whenever we search for the
application in question.

See https://bugs.kde.org/show_bug.cgi?id=407588

After:

Identifier: org.kde.kdevelop.desktop [desktop-application]
Name: KDevelop
Summary: Featureful, plugin-extensible IDE for C/C++ and other programming languages
Package: kdevelop
Homepage: https://kdevelop.org
Icon: kdevelop_kdevelop.png
---
Identifier: org.kde.kdev-python [addon]
Name: KDevelop Python Support
Summary: Python language support for KDevelop
Package: kdevelop-python
Homepage: https://kdevelop.org
Icon: kdevelop-python_kdevelop.png
---
Identifier: org.kde.kdev-php [addon]
Name: KDevelop PHP Support
Summary: PHP language support for KDevelop
Package: kdevelop-php
Homepage: https://kdevelop.org
Icon: kdevelop-php_kdevelop.png

Before:

Identifier: org.kde.kdev-python [addon]
Name: KDevelop Python Support
Summary: Python language support for KDevelop
Package: kdevelop-python
Homepage: https://kdevelop.org
Icon: kdevelop-python_kdevelop.png
---
Identifier: org.kde.kdevelop.desktop [desktop-application]
Name: KDevelop
Summary: Featureful, plugin-extensible IDE for C/C++ and other programming languages
Package: kdevelop
Homepage: https://kdevelop.org
Icon: kdevelop_kdevelop.png
---
Identifier: org.kde.kdev-php [addon]
Name: KDevelop PHP Support
Summary: PHP language support for KDevelop
Package: kdevelop-php
Homepage: https://kdevelop.org
Icon: kdevelop-php_kdevelop.png

[ximion]

I think doing this is fair game. I was originally looking into something more advanced, involving absorbing more metadata from an addon into the parent component, and then devaluing the addon explicitly, given that most software centers display addons alongside their matching components.
but this will do as well for now. The patch needs some style fixed (a token-type is an uint that mustn't go below zero), but I'll just fix that afterwards.

[ximion]

It is really odd that Cuttlefish still has a higher score than KDevelop if you search for "kdevelop" - even if the latter has an exact match for the term in its description multiple times, and also matches exactly with its name.
I'll have to look into that, maybe some stemming weirdness is going on here.