feat: reconnect on disconnect (add status to TUI)

- add `Connected()` method for client
- add `LastErr` field to GoTomatoClient
  - replace error logging by updating `LastErr` field
  - modify methods to use pointer receivers for Client
- add `prevMessage` variable to store the last received server message
- show connect status in TUI
- use EnterAltScreen instead of ClearScreen

internal/websocket/send.go

@@ -4,27 +4,30 @@ import (
 	"encoding/json"
 	"github.com/gorilla/websocket"
 
-	"git.smsvc.net/pomodoro/ChronoTomato/internal/helper"
 	GoTomato "git.smsvc.net/pomodoro/GoTomato/pkg/models"
 )
 
 // Sends a message to the clients websocket
-func sendClientCommand(c Client, msg GoTomato.ClientCommand) {
+func sendClientCommand(c *Client, msg GoTomato.ClientCommand) {
+	if !c.Connected() {
+		// noop if client is not connected
+		return
+	}
 	messageBytes, err := json.Marshal(msg)
 	if err != nil {
-		helper.Logger.Error("Error marshalling!", "reason", err)
+		c.LastErr = err
 		return
 	}
 
 	err = c.Conn.WriteMessage(websocket.TextMessage, messageBytes)
 	if err != nil {
-		helper.Logger.Error("Write error!", "reason", err)
+		c.LastErr = err
 		return
 	}
 }
 
 // Sends the passed command to the server
-func (c Client) SendCmd(cmd string) {
+func (c *Client) SendCmd(cmd string) {
 	message := GoTomato.ClientCommand{
 		Command:  cmd,
 		Password: c.Password,
@@ -34,7 +37,7 @@ func (c Client) SendCmd(cmd string) {
 }
 
 // Sends the new PomodoroConfig to the server
-func (c Client) SendSettingsUpdate(settings GoTomato.PomodoroConfig) {
+func (c *Client) SendSettingsUpdate(settings GoTomato.PomodoroConfig) {
 	message := GoTomato.ClientCommand{
 		Command:  "updateSettings",
 		Password: c.Password,