(improvement)(common) support qianfan in springboot (#1175)

common/src/main/java/dev/langchain4j/qianfan/spring/EmbeddingModelProperties.java

@@ -0,0 +1,19 @@
+package dev.langchain4j.qianfan.spring;
+
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+class EmbeddingModelProperties {
+    private String baseUrl;
+    private String apiKey;
+    private String secretKey;
+    private Integer maxRetries;
+    private String modelName;
+    private String endpoint;
+    private String user;
+    private Boolean logRequests;
+    private Boolean logResponses;
+
+}