kdeFrameworks: fixup inputs and outputs

- Reduce environment pollution with a separate $bin output containing programs,
  plugins, and shared data. Libraries remain in $out and are not installed into
  the environment.
- Only propagate build inputs as required.

pkgs/development/libraries/kde-frameworks/kdnssd.nix

@@ -1,7 +1,7 @@
 {
   mkDerivation, lib,
-  extra-cmake-modules, qttools,
-  avahi, qtbase
+  extra-cmake-modules,
+  avahi, qtbase, qttools,
 }:
 
 mkDerivation {
@@ -10,6 +10,8 @@ mkDerivation {
     maintainers = [ lib.maintainers.ttuegel ];
     broken = builtins.compareVersions qtbase.version "5.6.0" < 0;
   };
-  nativeBuildInputs = [ extra-cmake-modules qttools ];
-  propagatedBuildInputs = [ avahi qtbase ];
+  nativeBuildInputs = [ extra-cmake-modules ];
+  buildInputs = [ avahi qttools ];
+  propagatedBuildInputs = [ qtbase ];
+  outputs = [ "out" "dev" ];
 }