expose ability to run commands in display environment

Author: ianfixes

lib/arduino_ci/display_manager.rb

@@ -80,6 +80,24 @@ def with_display
       end
     end
 
+    # run a command in a display
+    def run(env, args, **kwargs)
+      ret = false
+      with_display do |env_vars|
+        env_vars = {} if env_vars.nil?
+        env_vars.merge!(env) unless env.nil?
+        full_cmd = env_vars.empty? ? args : [env_vars] + args
+        puts "Running #{env_vars} $ #{args.join(' ')}"
+        ret = system(*full_cmd, **kwargs)
+      end
+      ret
+    end
+
+    # run a command in a display with no output
+    def run_silent(env, *args)
+      run(env, args, out: File::NULL, err: File::NULL)
+    end
+
     def environment
       return nil unless @existing || @enabled
       return {} if @existing