!261 add multimedia repo

* add multimedia repo

sig/sig-graphicsandmedia/sig-graphicsandmedia.md

@@ -28,6 +28,7 @@ OpenHarmony Graphics and Multimedia related design and review.
   - third_party_libffi:https://gitee.com/openharmony/third_party_libffi
   - third_party_libsnd:https://gitee.com/openharmony/third_party_libsnd
   - third_party_pulseaudio:https://gitee.com/openharmony/third_party_pulseaudio
+  - third_party_ffmpeg:https://gitee.com/openharmony/third_party_ffmpeg
   - graphic_standard:https://gitee.com/openharmony/graphic_standard
   - graphic_surface:https://gitee.com/openharmony/graphic_surface
   - graphic_ui:https://gitee.com/openharmony/graphic_ui

sig/sig-graphicsandmedia/sig-graphicsandmedia_cn.md

@@ -28,6 +28,7 @@ OpenHarmony 图形和媒体管理。
   - third_party_libffi:https://gitee.com/openharmony/third_party_libffi
   - third_party_libsnd:https://gitee.com/openharmony/third_party_libsnd
   - third_party_pulseaudio:https://gitee.com/openharmony/third_party_pulseaudio
+  - third_party_ffmpeg:https://gitee.com/openharmony/third_party_ffmpeg
   - graphic_standard:https://gitee.com/openharmony/graphic_standard
   - graphic_surface:https://gitee.com/openharmony/graphic_surface
   - graphic_ui:https://gitee.com/openharmony/graphic_ui

sig/sigs.json

@@ -281,6 +281,7 @@
             "https://gitee.com/openharmony/third_party_libffi",
             "https://gitee.com/openharmony/third_party_libsnd",
             "https://gitee.com/openharmony/third_party_pulseaudio",
+            "https://gitee.com/openharmony/third_party_ffmpeg",
             "https://gitee.com/openharmony/graphic_standard",
             "https://gitee.com/openharmony/graphic_surface",
             "https://gitee.com/openharmony/graphic_ui",
@@ -309,6 +310,7 @@
             "third_party/libffi",
             "third_party/libsnd",
             "third_party/pulseaudio",
+            "third_party/ffmpeg",
             "foundation/graphic/standard",
             "foundation/graphic/surface",
             "foundation/graphic/ui",

zh/committer.md

@@ -236,3 +236,4 @@
 |234|applications_mms|applications/standard/mms|https://gitee.com/starr666|starr.zhang@huawei.com|https://gitee.com/zhangjinlin1|zhangjinlin5@huawei.com|SIG_SystemApplication|
 |235|third_party_libsnd|third_party/libsnd|https://gitee.com/zhu-mingliang|zhumingliang@huawei.com| | |SIG_GraphicsandMedia|
 |236|third_party_pulseaudio|third_party/pulseaudio|https://gitee.com/zhu-mingliang|zhumingliang@huawei.com| | |SIG_GraphicsandMedia|
+|237|third_party_ffmpeg|third_party/ffmpeg|https://gitee.com/zhu-mingliang|zhumingliang@huawei.com| | |SIG_GraphicsandMedia|