Add missing Keywords metadata in desktop file

[ghisvail]

The Debian linting tool reports a missing Keywords field for the .desktop file. Please consider adding it.

I: spyder3: desktop-entry-lacks-keywords-entry usr/share/applications/spyder3.desktop
N: 
N:    This .desktop file does either not contain a "Keywords" entry or it does
N:    not contain any keywords not already present in the "Name" or
N:    "GenericName" entries.
N:    
N:    .desktop files are organized in key/value pairs (similar to .ini files).
N:    "Keywords" is the name of the entry/key in the .desktop file containing
N:    keywords relevant for this .desktop file.
N:    
N:    The desktop-file-validate tool in the desktop-file-utils package is
N:    useful for checking the syntax of desktop entries.
N:    
N:    Refer to
N:    https://specifications.freedesktop.org/desktop-entry-spec/latest/ar01s05.html,
N:    https://bugs.debian.org/693918, and
N:    https://wiki.gnome.org/Initiatives/GnomeGoals/DesktopFileKeywords for
N:    details.
N:    
N:    Severity: wishlist, Certainty: certain
N:    
N:    Check: menu-format, Type: binary
N: 

[ccordoba12]

Thanks for reporting. PRs are welcome (against the 3.x branch).