Add FFplay support to the application

Integrated FFplay functionality across the application. This includes support for setting up the FFplay path and invoking FFplay for media playback.

menu/view.go

@@ -12,7 +12,7 @@ import (
 )
 
 type ViewContract interface {
-	About(ffmpegVersion string, ffprobeVersion string)
+	About(ffmpegVersion string, ffprobeVersion string, ffplayVersion string)
 	Gratitude()
 }
 
@@ -60,7 +60,7 @@ func (v View) Gratitude() {
 	view.Show()
 }
 
-func (v View) About(ffmpegVersion string, ffprobeVersion string) {
+func (v View) About(ffmpegVersion string, ffprobeVersion string, ffplayVersion string) {
 	view := v.app.GetAppFyne().NewWindow(v.app.GetLocalizerService().GetMessage(&i18n.LocalizeConfig{
 		MessageID: "about",
 	}))
@@ -134,6 +134,7 @@ func (v View) About(ffmpegVersion string, ffprobeVersion string) {
 			)),
 			v.getAboutFfmpeg(ffmpegVersion),
 			v.getAboutFfprobe(ffprobeVersion),
+			v.getAboutFfplay(ffplayVersion),
 			widget.NewCard(v.app.GetLocalizerService().GetMessage(&i18n.LocalizeConfig{
 				MessageID: "AlsoUsedProgram",
 			}), "", v.getOther()),
@@ -207,6 +208,36 @@ func (v View) getAboutFfprobe(version string) *fyne.Container {
 	)
 }
 
+func (v View) getAboutFfplay(version string) *fyne.Container {
+	programmName := canvas.NewText(" FFplay", colornames.Darkgreen)
+	programmName.TextStyle = fyne.TextStyle{Bold: true}
+	programmName.TextSize = 20
+
+	programmLink := widget.NewHyperlink(v.app.GetLocalizerService().GetMessage(&i18n.LocalizeConfig{
+		MessageID: "programmLink",
+	}), &url.URL{
+		Scheme: "https",
+		Host:   "ffmpeg.org",
+		Path:   "ffplay.html",
+	})
+
+	licenseLink := widget.NewHyperlink(v.app.GetLocalizerService().GetMessage(&i18n.LocalizeConfig{
+		MessageID: "licenseLink",
+	}), &url.URL{
+		Scheme: "https",
+		Host:   "ffmpeg.org",
+		Path:   "legal.html",
+	})
+
+	return container.NewVBox(
+		programmName,
+		widget.NewLabel(version),
+		widget.NewRichTextFromMarkdown("**FFmpeg** is a trademark of **[Fabrice Bellard](http://bellard.org/)**, originator of the **[FFmpeg](https://ffmpeg.org/about.html)** project."),
+		widget.NewRichTextFromMarkdown("This software uses libraries from the **FFmpeg** project under the **[LGPLv2.1](http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html)**."),
+		container.NewHBox(programmLink, licenseLink),
+	)
+}
+
 func (v View) getOther() *fyne.Container {
 	return container.NewVBox(
 		canvas.NewLine(colornames.Darkgreen),