feat: add complete V server example and improve runner

- Create new `server.vsh` example with custom tools
- Update `example.sh` to use the new V server script
- Improve README with new, clearer running instructions
- Fix server to not send responses for notifications
- Remove debug logging statements from server and handler

lib/schemas/jsonrpc/handler.v

@@ -68,7 +68,6 @@ pub fn (handler Handler) handler(client &websocket.Client, message string) strin
 //   - The JSON-RPC response as a string, or an error if processing fails
 pub fn (handler Handler) handle(message string) !string {
 	// Extract the method name from the request
-	log.error('debugzo1')
 	method := decode_request_method(message)!
 	// log.info('Handling remote procedure call to method: ${method}')
 	// Look up the procedure handler for the requested method
@@ -77,8 +76,6 @@ pub fn (handler Handler) handle(message string) !string {
 		return method_not_found
 	}
 
-	log.error('debugzo3')
-
 	// Execute the procedure handler with the request payload
 	response := procedure_func(message) or { panic(err) }
 	return response