Add a section "external" to Multimedia Delivery Protocols (#250)

* Add a section "external" containing the DVB NIP Analyzer tool to the Multimedia Delivery Protocols

* Update external.md

* Add files via upload

* Update v3c-immersive-platform-in-android-streaming.md

* Update external.md

---------

Co-authored-by: Jordi J. Gimenez <87380947+jordijoangimenez@users.noreply.github.com>

Author: dsilhavy

assets/images/Banner_ExternalTools.png

@@ -0,0 +1,26 @@
+---
+layout: default
+title: External Tools
+parent: Multimedia Delivery Protocols
+has_children: false
+nav_order: 7
+---
+<img src="../../assets/images/Banner_ExternalTools.png" /> 
+
+1. TOC
+{:toc}
+
+# External Tools
+
+This section provides information about third-party tools that can be used in conjunction with the 5G-MAG Multimedia
+Delivery Protocols Reference Tools. The tools listed here can enhance the functionality and usability of the reference tools, help
+with testing and evaluation, and provide additional features for multimedia content delivery.
+
+## DVB NIP Analyzer
+
+The DVB NIP Analyzer is a tool for analyzing and testing DVB-NIP streams. It can be used to inspect FLUTE sessions and
+understand the structure of the transmitted data.
+
+The tool is available on Docker Hub: [DVB NIP Analyzer](https://hub.docker.com/r/sessystems/dvb-nip-analyzer).
+
+<iframe width="560" height="315" src="https://www.youtube.com/embed/videoID" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>

pages/multimedia-content-delivery/external.md

@@ -11,7 +11,7 @@ nav_order: 0
 
 ## Introduction
 
-This tutorials provides the instructions to setup the V3C Immersive Platform for an Android device using content streamed from a DASH server.
+This tutorial provides the instructions to setup the V3C Immersive Platform for an Android device using content streamed from a DASH server.
 
 <iframe width="560" height="315" src="https://www.youtube.com/embed/4Mj_eJnYVjE?si=DGY8rmDpl-mAJBfH" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>