chore: Move Linux-only configs out of "common" and into "linux"

common/.config/kate/externaltools/XML%20Format%20Full%20File.ini

@@ -1,13 +0,0 @@
-[General]
-actionName=externaltool_XMLFormatFullFile
-arguments=--format "%{Document:FileName}"
-category=Tools
-cmdname=xml-format-file
-executable=xmllint
-icon=application-xml
-name=XML Format Full File
-output=ReplaceCurrentDocument
-reload=false
-save=CurrentDocument
-trigger=None
-workingDir=%{Document:Path}