Disconnect stream Admin API + HTTP Basic Auth (#204)

* Create http auth middleware

* Add support for ending the inbound stream. Closes #191

* Add a simple success response to API requests

controllers/admin.go

@@ -0,0 +1,19 @@
+package controllers
+
+import (
+	"net/http"
+
+	"github.com/gabek/owncast/core"
+	"github.com/gabek/owncast/core/rtmp"
+)
+
+// DisconnectInboundConnection will force-disconnect an inbound stream
+func DisconnectInboundConnection(w http.ResponseWriter, r *http.Request) {
+	if !core.GetStatus().Online {
+		writeSimpleResponse(w, false, "no inbound stream connected")
+		return
+	}
+
+	rtmp.Disconnect()
+	writeSimpleResponse(w, true, "inbound stream disconnected")
+}