added installer shell script and additional steps

tui/steps/hostname.go

@@ -0,0 +1,61 @@
+package steps
+
+import (
+	"miasma-installer/tui/styles"
+
+	"github.com/charmbracelet/bubbles/textinput"
+	tea "github.com/charmbracelet/bubbletea"
+)
+
+type HostnameModel struct {
+	Hostname  string
+	input     textinput.Model
+	Finished  bool
+}
+
+func NewHostnameModel() HostnameModel {
+	ti := textinput.New()
+	ti.Placeholder = "miasma"
+	ti.Focus()
+	ti.CharLimit = 63
+
+	return HostnameModel{
+		input: ti,
+	}
+}
+
+func (m HostnameModel) Init() tea.Cmd {
+	return textinput.Blink
+}
+
+func (m HostnameModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
+	if m.Finished {
+		return m, nil
+	}
+
+	switch msg := msg.(type) {
+	case tea.KeyMsg:
+		switch msg.String() {
+		case "enter":
+			if m.input.Value() != "" {
+				m.Hostname = m.input.Value()
+				m.Finished = true
+				return m, nil
+			}
+		}
+	}
+
+	var cmd tea.Cmd
+	m.input, cmd = m.input.Update(msg)
+	return m, cmd
+}
+
+func (m HostnameModel) View() string {
+	s := styles.TitleStyle.Render("System Hostname")
+	s += "\n\n"
+	s += "Enter a hostname for your system:\n\n"
+	s += m.input.View() + "\n\n"
+	s += styles.HelpStyle.Render("[Enter] Continue")
+
+	return styles.MainStyle.Render(s)
+}