treewide: add version to packages

Lots of packages are missing versions in their name. This adds them
where appropriate. These were found with this command:

 $ nix-env -qa -f. | grep -v '\-[0-9A-Za-z.-_+]*$' | grep -v '^hook$'

See issue #41007.

pkgs/misc/cups/drivers/brlaser/default.nix

@@ -2,13 +2,14 @@
 
 stdenv.mkDerivation rec {
 
-  name = "brlaser";
+  name = "brlaser-${version}";
+  version = "4";
 
   src = fetchFromGitHub {
     owner = "pdewacht";
     repo = "brlaser";
-    rev = "a52149823373e11f918d9e6a56eda7242935c99b";
-    sha256 = "12d8g0aispdj2virf6vrvb0vx6d6ardjg3qyav75shsm1f94ids6";
+    rev = "v${version}";
+    sha256 = "1yy4mpf68c82h245srh2sd1yip29w6kx14gxk4hxkv496gf55lw5";
   };
 
   buildInputs = [ cmake zlib cups ];

pkgs/misc/cups/drivers/estudio/default.nix

@@ -1,7 +1,7 @@
 { stdenv, fetchurl, perl }:
 
-stdenv.mkDerivation {
-  name = "cups-toshiba-estudio";
+stdenv.mkDerivation rec {
+  name = "cups-toshiba-estudio-${version}";
   version = "7.51";
 
   src = fetchurl {