Add initial implementations for encoder handling and conversion logic

Introduce encoder modules for various codecs and formats (e.g., h264_nvenc, libx264, libmp3lame). Add `Convertor` logic to retrieve supported formats via FFmpeg utilities and manage encoders for audio, video, and image processing.

internal/application/convertor/progressbar.go

@@ -0,0 +1,63 @@
+package convertor
+
+import (
+	"fyne.io/fyne/v2"
+	"fyne.io/fyne/v2/canvas"
+	"fyne.io/fyne/v2/container"
+	"fyne.io/fyne/v2/theme"
+	"fyne.io/fyne/v2/widget"
+)
+
+type ProgressBarContract interface {
+	GetContainer() *fyne.Container
+}
+
+type progressBar struct {
+	container     *fyne.Container
+	label         *widget.Label
+	progressbar   *widget.ProgressBar
+	errorBlock    *container.Scroll
+	messageError  *canvas.Text
+	statusMessage *canvas.Text
+	buttonPlay    *widget.Button
+}
+
+func NewProgressBar() ProgressBarContract {
+	label := widget.NewLabel("")
+	progressbar := widget.NewProgressBar()
+
+	statusMessage := canvas.NewText("", theme.Color(theme.ColorNamePrimary))
+	messageError := canvas.NewText("", theme.Color(theme.ColorNameError))
+	buttonPlay := widget.NewButtonWithIcon("", theme.Icon(theme.IconNameMediaPlay), func() {
+
+	})
+	buttonPlay.Hide()
+
+	errorBlock := container.NewHScroll(messageError)
+	errorBlock.Hide()
+
+	content := container.NewVBox(
+		container.NewHScroll(label),
+		progressbar,
+		container.NewHScroll(container.NewHBox(
+			buttonPlay,
+			statusMessage,
+		)),
+		errorBlock,
+	)
+	content.Hide()
+
+	return &progressBar{
+		container:     content,
+		label:         label,
+		progressbar:   progressbar,
+		errorBlock:    errorBlock,
+		messageError:  messageError,
+		statusMessage: statusMessage,
+		buttonPlay:    buttonPlay,
+	}
+}
+
+func (p *progressBar) GetContainer() *fyne.Container {
+	return p.container
+}