establishing initial auth middleware and routes

internal/handler/dashboard.go

@@ -0,0 +1,14 @@
+package handler
+
+import "net/http"
+
+type dashboardHandler struct{}
+
+func NewDashboardHandler() *dashboardHandler {
+	return &dashboardHandler{}
+}
+
+func (h *dashboardHandler) DashboardPage(w http.ResponseWriter, r *http.Request) {
+	w.WriteHeader(200)
+	w.Write([]byte("Dashboard page"))
+}