☢️ WTF-1031 Support multiple simultaneous configurations (#1032)

* WTF-1031 Rename WtfApp.app to WtfApp.tviewApp

Signed-off-by: Chris Cummer <chriscummer@me.com>

* WTF-1031 Add scaffolding for main to support multiple WtfApp instances

Signed-off-by: Chris Cummer <chriscummer@me.com>

* WTF-1031 WIP

Signed-off-by: Chris Cummer <chriscummer@me.com>

* Remove common functionality from KeyboardWidget and into Base

Signed-off-by: Chris Cummer <chriscummer@me.com>

* Augment with some descriptive comments

Signed-off-by: Chris Cummer <chriscummer@me.com>

* Add full support for multiple app instances via the AppManager.

Still to do:

* Config support for multiple apps/multiple config files
* The ability to switch between apps

Signed-off-by: Chris Cummer <chriscummer@me.com>

* Move SetTerminal out of main and into its own file

Signed-off-by: Chris Cummer <chriscummer@me.com>

modules/nbascore/keyboard.go

@@ -3,6 +3,7 @@ package nbascore
 import "github.com/gdamore/tcell"
 
 func (widget *Widget) initializeKeyboardControls() {
+	widget.InitializeHelpTextKeyboardControl(widget.ShowHelp)
 	widget.InitializeRefreshKeyboardControl(widget.Refresh)
 
 	widget.SetKeyboardChar("l", widget.next, "Select next item")

modules/nbascore/widget.go

@@ -24,9 +24,9 @@ type Widget struct {
 }
 
 // NewWidget creates a new instance of a widget
-func NewWidget(app *tview.Application, pages *tview.Pages, settings *Settings) *Widget {
+func NewWidget(tviewApp *tview.Application, pages *tview.Pages, settings *Settings) *Widget {
 	widget := Widget{
-		TextWidget: view.NewTextWidget(app, pages, settings.Common),
+		TextWidget: view.NewTextWidget(tviewApp, pages, settings.Common),
 
 		settings: settings,
 	}