chore: note about repository deprecation (#115)

README.md

@@ -1,3 +1,10 @@
+⚠️ This repository is deprecated. ⚠️
+==================================
+
+We strongly recommend to use instead
+- [go-sdk](https://github.com/bitcoin-sv/go-sdk) instead and the transaction broadcaster there, of coure feel free to create an [issue in go-sdk](https://github.com/bitcoin-sv/go-sdk/issues), if there is any lacking feature in go-sdk that you used from this library 
+- plain requests to ARC or maybe look at the [ARC repository](https://github.com/bitcoin-sv/arc) for some help with creating a client
+
 # go-broadcast-client
 
 > Interact with Bitcoin SV ARC exposing the interface [interface.go](https://github.com/bitcoin-sv/go-broadcast-client/blob/main/broadcast/interface.go)