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/builder.go

@@ -0,0 +1,11 @@
+package services
+
+import (
+	"context"
+
+	"nhooyr.io/websocket"
+)
+
+func BuildService[T Light | HomeAssistant](conn *websocket.Conn, ctx context.Context) *T {
+	return &T{conn: conn, ctx: ctx}
+}