Added repos as submodules

.gitmodules

@@ -0,0 +1,41 @@
+[submodule "repos/ffnvcodec"]
+	path = repos/ffnvcodec
+	url = https://github.com/FFmpeg/nv-codec-headers.git
+	branch = sdk/9.1
+[submodule "repos/amf"]
+	path = repos/amf
+	url = https://github.com/GPUOpen-LibrariesAndSDKs/AMF.git
+[submodule "repos/svt-av1"]
+	path = repos/svt-av1
+	url = https://github.com/AOMediaCodec/SVT-AV1
+[submodule "repos/libogg"]
+	path = repos/libogg
+	url = https://github.com/xiph/ogg.git
+[submodule "repos/libvorbis"]
+	path = repos/libvorbis
+	url = https://github.com/xiph/vorbis.git
+[submodule "repos/snappy"]
+	path = repos/snappy
+	url = https://github.com/google/snappy.git
+[submodule "repos/libvpx"]
+	path = repos/libvpx
+	url = https://github.com/webmproject/libvpx.git
+[submodule "repos/fdk-aac"]
+	path = repos/fdk-aac
+	url = https://github.com/mstorsjo/fdk-aac.git
+[submodule "repos/zimg"]
+	path = repos/zimg
+	url = https://github.com/sekrit-twc/zimg.git
+[submodule "repos/x264"]
+	path = repos/x264
+	url = https://code.videolan.org/videolan/x264.git
+[submodule "repos/opus"]
+	path = repos/opus
+	url = https://github.com/xiph/opus.git
+[submodule "repos/x265"]
+	path = repos/x265
+	url = https://github.com/videolan/x265.git
+[submodule "repos/ffmpeg"]
+	path = repos/ffmpeg
+	url = https://github.com/FFmpeg/FFmpeg.git
+	branch = release/5.0