release layout: archive c3 under releases/archived/ (keep only latest cut at root)

.gitattributes

@@ -43,3 +43,5 @@ opencoti-llamafile-0.10.3-c4-win-x86_64.llamafile.exe filter=lfs diff=lfs merge=
 opencoti-llamafile-0.10.3-c4-aarch64.llamafile filter=lfs diff=lfs merge=lfs -text
 dso/0.10.3-c4/ggml-cuda-x86_64.so filter=lfs diff=lfs merge=lfs -text
 dso/0.10.3-c4/ggml-cuda-sbsa-aarch64.so filter=lfs diff=lfs merge=lfs -text
+releases/archived/llamafile-v0.10.3+opencoti.c3/dso/ggml-cuda-x86_64.so filter=lfs diff=lfs merge=lfs -text
+releases/archived/llamafile-v0.10.3+opencoti.c3/dso/ggml-cuda-sbsa-aarch64.so filter=lfs diff=lfs merge=lfs -text