app: migrate to new shim implementation

Both machinectl and sudo launch methods launch shim as shim is now responsible for setting up the sandbox. Various app structures are adapted to accommodate bwrap configuration and mediated wayland access.

Signed-off-by: Ophestra Umiker <cat@ophivana.moe>

main.go

@@ -10,6 +10,7 @@ import (
 	"git.ophivana.moe/cat/fortify/dbus"
 	"git.ophivana.moe/cat/fortify/internal"
 	"git.ophivana.moe/cat/fortify/internal/app"
+	"git.ophivana.moe/cat/fortify/internal/shim"
 	"git.ophivana.moe/cat/fortify/internal/state"
 	"git.ophivana.moe/cat/fortify/internal/verbose"
 )
@@ -35,7 +36,7 @@ func main() {
 
 	// launcher payload early exit
 	if printVersion && printLicense {
-		app.TryShim()
+		shim.Try()
 	}
 
 	// version/license command early exit