Project restructure (#18)

* First pass at restructuring the project; untested but it does compile

* Restructure builds and runs 🎉

* Add the dist folder to the gitignore

* Update core/playlist/monitor.go

* golint and reorganize the monitor.go file

Co-authored-by: Gabe Kangas <gabek@real-ity.com>

models/pingMessage.go

@@ -0,0 +1,6 @@
+package models
+
+//PingMessage represents a ping message between the client and server
+type PingMessage struct {
+	MessageType string `json:"type"`
+}