good progress yay:

- impl http client
- create http client in App()
- generic builder for Service.*
- set Service on app to pass to callbacks later
- impl State
- set State on app to pass to callbacks later
- change panic to log.Fatalln

internal/services/homeassistant.go

@@ -0,0 +1,18 @@
+package services
+
+import (
+	"context"
+
+	"github.com/saml-dev/gome-assistant/internal/http"
+	"nhooyr.io/websocket"
+)
+
+type HomeAssistant struct {
+	conn       *websocket.Conn
+	ctx        context.Context
+	httpClient *http.HttpClient
+}
+
+// TODO: design how much reuse I can get between request types. E.g.
+// only difference between light.turnon and homeassistant.turnon is
+// domain and extra data