teams: Add Dotnet team.

* etc/teams.scm (dotnet): New team.
* CODEOWNERS: Update.

Change-Id: I2a424a621d003150440e525760bfd2797917f29e

CODEOWNERS

@@ -161,6 +161,8 @@ gnu/system/examples/bare-bones\.tmpl               @guix/documentation
 gnu/system/examples/lightweight-desktop\.tmpl      @guix/documentation
 gnu/system/examples/desktop\.tmpl                  @guix/documentation
 
+gnu/packages/dotnet\.scm                           @guix/dotnet
+
 gnu/packages/electronics\.scm                      @guix/electronics
 gnu/packages/hdl\.scm                              @guix/electronics
 gnu/packages/libftdi\.scm                          @guix/electronics

etc/teams.scm

@@ -661,6 +661,12 @@ challenges"))
                       "gnu/system/examples/lightweight-desktop.tmpl"
                       "gnu/system/examples/desktop.tmpl")))
 
+(define-team dotnet
+  (team 'dotnet
+        #:name ".NET"
+        #:description ".NET programming environment."
+        #:scope (list "gnu/packages/dotnet.scm")))
+
 (define-team electronics
   (team 'electronics
         #:name "Electronics team"