feat: use bubbletea framework

- implement TUI in bubbletea
  - split components into separate files
- remove now unused functions
- restructure files

cmd/client/view.go

@@ -0,0 +1,24 @@
+package client
+
+import (
+	"strings"
+
+	"git.smsvc.net/pomodoro/ChronoTomato/cmd/client/helper"
+	GoTomato "git.smsvc.net/pomodoro/GoTomato/pkg/models"
+)
+
+func (a app) View() string {
+	var body string
+
+	if a.pomodoro != (GoTomato.ServerMessage{}) {
+		body = helper.TerminalOutput(a.pomodoro)
+		helper.DesktopNotifications(a.pomodoro)
+	} else {
+		body = "Waiting for first server message..."
+	}
+
+	helpView := a.help.View(a.keys)
+	height := 8 - strings.Count(body, "\n") - strings.Count(helpView, "\n")
+
+	return body + strings.Repeat("\n", height) + helpView
+}