refactor: add the self hosted deepseek ai to the provider

lua/plugins/avante.lua

@@ -6,14 +6,14 @@ return {
         opts = {
             -- add any opts here
             -- for example
-            provider = "openai",
-            openai = {
-                endpoint = "https://api.openai.com/v1",
-                model = "gpt-4o", -- your desired model (or use gpt-4o, etc.)
-                timeout = 30000, -- Timeout in milliseconds, increase this for reasoning models
-                temperature = 0,
-                max_tokens = 8192, -- Increase this to include reasoning tokens (for reasoning models)
-                --reasoning_effort = "medium", -- low|medium|high, only used for reasoning models
+            provider = "openrouter",
+            vendors = {
+                openrouter = {
+                    __inherited_from = "openai",
+                    endpoint = "https://agent-ntmomgqaacrtahpdyjsdnynx-ywn9a.ondigitalocean.app/api/v1",
+                    api_key_name = "DO_GEN_AI_API_KEY",
+                    model = "deepseek/deepseek-r1",
+                },
             },
         },
         -- if you want to build from source then do `make BUILD_FROM_SOURCE=true`