public String resolvePromptText(String value) throws Exception {
		if (value.startsWith("classpath://")) {
			ClassPathResource resource = new ClassPathResource(value.substring(12));
			return new String(resource.getContentAsByteArray(), StandardCharsets.UTF_8);
		}
		else if (value.startsWith("http://") || value.startsWith("https://")) {
			UrlResource resource = new UrlResource(value);
			return new String(resource.getContentAsByteArray(), StandardCharsets.UTF_8);
		}
		else {
			return value;
		}
	}
load prompts from all prompts.properties files in classpath

@author linux_china
src/main/java/org/mvnsearch/chatgpt/spring/service/PromptPropertiesStoreImpl.java