vim : bring back simple llm.vim example

examples/llm.vim

@@ -0,0 +1,25 @@
+" Basic plugin example
+
+function! Llm()
+
+  let url = "http://127.0.0.1:8080/completion"
+
+  " Get the content of the current buffer
+  let buffer_content = join(getline(1, '$'), "\n")
+
+  " Create the JSON payload
+  let json_payload = {"temp":0.72,"top_k":100,"top_p":0.73,"repeat_penalty":1.100000023841858,"n_predict":10,"stream": v:false}
+  let json_payload.prompt = buffer_content
+
+  " Define the curl command
+  let curl_command = 'curl -k -s -X POST -H "Content-Type: application/json" -d @- ' . url
+  let response = system(curl_command, json_encode(json_payload))
+
+  " Extract the content field from the response
+  let content = json_decode(response).content
+
+  " Insert the content at the cursor position
+  call setline(line('.'), getline('.') . content)
+endfunction
+
+command! Llm call Llm()