models : Added support for RND1 Diffusion Language Model (#17433)

* Converted RND1 model to GGUF weights

* RND1 llama.cpp support v1

* RND1 llama.cpp support v2 non causal bug

* RND1 llama.cpp support v3 doccumentation

* RND1 llama.cpp support v4 clean code

* linting issues

* RND1 pr fixes v1

* RND1 pr fixes v2

Co-authored-by: Sigbjørn Skjæret <sigbjorn.skjaeret@scala.com>

* Diffusion documentation edits

---------

Co-authored-by: Sigbjørn Skjæret <sigbjorn.skjaeret@scala.com>

src/CMakeLists.txt

@@ -115,6 +115,7 @@ add_library(llama
             models/qwen3vl-moe.cpp
             models/qwen3moe.cpp
             models/refact.cpp
+            models/rnd1.cpp
             models/rwkv6-base.cpp
             models/rwkv6.cpp
             models/rwkv6qwen2.cpp