chore(kate): Move kate back to "common" as it is cross-platform

- Link Kwrite config with Kate

common/.config/kate/externaltools/git%20blame.ini

@@ -0,0 +1,12 @@
+[General]
+actionName=externaltool_gitblame
+arguments=gui blame --line=%{Document:Cursor:Line} %{Document:FileName}
+category=Git
+cmdname=git-blame
+executable=git
+name=git blame
+output=Ignore
+reload=false
+save=CurrentDocument
+trigger=None
+workingDir=%{Document:Path}