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

linux/.config/kate/externaltools/Compile%20and%20Run%20cpp.ini

@@ -0,0 +1,12 @@
+[General]
+actionName=externaltool_C++CompileRun
+arguments=-c 'g++ "%{Document:FilePath}" -o "%{Document:FileBaseName}" && "./%{Document:FileBaseName}"'
+category=Tools
+executable=sh
+icon=text-x-c++src
+name=Compile and Run cpp
+output=DisplayInPane
+reload=false
+save=CurrentDocument
+trigger=None
+workingDir=%{Document:Path}