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

linux/.config/kate/externaltools/Clang%20Format%20Full%20File.ini

@@ -0,0 +1,12 @@
+[General]
+actionName=externaltool_ClangFormatFullFile
+arguments=-i %{Document:FileName}
+category=Tools
+cmdname=clang-format-file
+executable=clang-format
+name=Clang Format Full File
+output=Ignore
+reload=true
+save=CurrentDocument
+trigger=None
+workingDir=%{Document:Path}