Moved Shaman code into Flamenco Manager

This Shaman code is a copy of revision 195ee4b02c715b9ec1936aa226f2cb10ea7fe32a
at https://gitlab.com/blender-institute/shaman. That repository will most
likely not see any more updates, and Shaman will become a part of Flamenco
Manager.

shaman/httpserver/httpserver.go

@@ -0,0 +1,48 @@
+package httpserver
+
+/* ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * ***** END GPL LICENCE BLOCK *****
+ *
+ * (c) 2019, Blender Foundation - Sybren A. Stüvel
+ */
+
+import (
+	"net/http"
+	"time"
+
+	"github.com/armadillica/flamenco-manager/shaman/auth"
+	"github.com/gorilla/mux"
+)
+
+// Create instantiates a new http.Server.
+func Create(router *mux.Router, auther auth.Authenticator) *http.Server {
+	RegisterTestRoutes(router, auther)
+
+	address := ":3000"
+	httpServer := &http.Server{
+		Addr: address,
+		// TODO(Sybren): replace with our own custom logging handler.
+		// Handler:     handlers.LoggingHandler(os.Stderr, router),
+		Handler:     router,
+		ReadTimeout: 3 * time.Minute,
+	}
+
+	packageLogger.WithField("address", address).Info("created HTTP server")
+
+	return httpServer
+}