restructure app state, basic server connection using inputted user info and basic mainscreen

ui/mainscreen/cmds.go

@@ -0,0 +1,26 @@
+package mainscreen
+
+import (
+	"log"
+
+	tea "github.com/charmbracelet/bubbletea"
+)
+
+type ReceivedIRCCommandMsg struct {
+	Msg string
+}
+
+type InitialReadMsg struct{}
+
+func InitialRead() tea.Msg {
+	return InitialReadMsg{}
+}
+
+func (s State) readFromServer() tea.Msg {
+	msg, err := s.Reader.ReadString('\n')
+	if err != nil {
+		log.Print(err)
+	}
+
+	return ReceivedIRCCommandMsg{Msg: msg}
+}