Start working on web server (#2)

* Start working on web server

* Some restructure

* Serving static works

* Fix linter complaint

* Enable local dev

* Static files served fine

* Tidy

pkg/dashboard/main.go

@@ -0,0 +1,16 @@
+package dashboard
+
+import (
+	"helm.sh/helm/v3/pkg/release"
+)
+
+type DataLayer struct {
+}
+
+func (l *DataLayer) CheckConnectivity() {
+	// TODO: check that we can work with context and subcommands
+}
+
+func (l *DataLayer) ListInstalled() []*release.Release {
+	return nil // TODO
+}