Ports: Add libmpeg2

Author: https://github.com/gmta
Commit: https://github.com/SerenityOS/serenity/commit/6a3017625b
Pull-request: https://github.com/SerenityOS/serenity/pull/12695
Reviewed-by: https://github.com/Quaker762 ✅
Reviewed-by: https://github.com/linusg ✅
Reviewed-by: https://github.com/sunverwerth ✅

Ports/AvailablePorts.md

@@ -90,6 +90,7 @@ Please make sure to keep this list up to date when adding and updating ports. :^
 | [`libjpeg`](libjpeg/)                  | libjpeg                                                         | 9e                       | https://ijg.org/                                                               |
 | [`libmad`](libmad/)                    | libmad                                                          | 0.15.1b                  | https://www.underbit.com/products/mad/                                         |
 | [`libmodplug`](libmodplug/)            | libmodplug                                                      | 0.8.8.5                  | http://modplug-xmms.sourceforge.net/                                           |
+| [`libmpeg2`](libmpeg2/)                | libmpeg2                                                        | 0.5.1                    | https://libmpeg2.sourceforge.io/                                               |
 | [`libogg`](libogg/)                    | libogg                                                          | 1.3.5                    | https://github.com/xiph/ogg                                                    |
 | [`liboggz`](liboggz/)                  | liboggz                                                         | 1.1.1                    | https://www.xiph.org/oggz/                                                     |
 | [`libopenal`](libopenal/)              | OpenAL soft                                                     | 1.21.1                   | https://openal-soft.org/                                                       |

Ports/libmpeg2/package.sh

@@ -0,0 +1,8 @@
+#!/usr/bin/env -S bash ../.port_include.sh
+port=libmpeg2
+version=0.5.1
+useconfigure=true
+use_fresh_config_sub=true
+config_sub_path=.auto/config.sub
+files="https://libmpeg2.sourceforge.io/files/libmpeg2-${version}.tar.gz libmpeg2-${version}.tar.gz dee22e893cb5fc2b2b6ebd60b88478ab8556cb3b93f9a0d7ce8f3b61851871d4"
+auth_type=sha256