Add RKLLM library and count .rkllm downloads (#1716)

Adds support for the RKLLM library (Rockchip’s RKNN-LLM toolkit) to
Hugging Face Hub.

---------

Co-authored-by: Lucain <lucainp@gmail.com>

Author: jamescallander

packages/tasks/src/model-libraries.ts

@@ -852,6 +852,12 @@ export const MODEL_LIBRARIES_UI_ELEMENTS = {
 		repoUrl: "https://github.com/revdotcom/reverb",
 		filter: false,
 	},
+	rkllm: {
+		prettyLabel: "RKLLM",
+		repoName: "RKLLM",
+		repoUrl: "https://github.com/airockchip/rknn-llm",
+		countDownloads: `path_extension:"rkllm"`,
+	},
 	saelens: {
 		prettyLabel: "SAELens",
 		repoName: "SAELens",