feat(provider): add NVIDIA to popular providers, docs, and attribution headers (#22927)

Co-authored-by: Kit Langton <kit.langton@gmail.com>
Co-authored-by: Aiden Cline <63023139+rekram1-node@users.noreply.github.com>

packages/opencode/src/provider/provider.ts

@@ -410,6 +410,16 @@ function custom(dep: CustomDep): Record<string, CustomLoader> {
           },
         },
       }),
+    nvidia: () =>
+      Effect.succeed({
+        autoload: false,
+        options: {
+          headers: {
+            "HTTP-Referer": "https://opencode.ai/",
+            "X-Title": "opencode",
+          },
+        },
+      }),
     vercel: () =>
       Effect.succeed({
         autoload: false,