refactor: use app getting instead of boilerplate

pkg/app/app.go

@@ -0,0 +1,20 @@
+package app
+
+import (
+	"coopcloud.tech/abra/pkg/config"
+)
+
+// Get retrieves an app
+func Get(appName string) (config.App, error) {
+	files, err := config.LoadAppFiles("")
+	if err != nil {
+		return config.App{}, err
+	}
+
+	app, err := config.GetApp(files, appName)
+	if err != nil {
+		return config.App{}, err
+	}
+
+	return app, nil
+}