feat: refactor client handling and introduce websocket client type

- add new websocket.Client type
- change Connect and Disconnect functions to use the new Client type
- implement methods for sending commands and updating settings on Client
- update keyhandler to use websocket.Client instead of ChronoTomato.Client
- modify UpdateLoop to accept websocket.Client
- refactor ProcessServerMessages to accept the new Client type

🤖

pkg/models/client.go

@@ -0,0 +1,8 @@
+package models
+
+import "github.com/gorilla/websocket"
+
+// Represents a websocket client
+type PomodoroClient struct {
+	Conn *websocket.Conn // The websocket connection of the client
+}