增加libcurl库调用百度API，与原来的的go命令执行调用API两种。libcurl涉及静态链接，考虑使用哪种？

libcjson/lib/pkgconfig/libcjson_utils.pc

@@ -0,0 +1,10 @@
+libdir=/opt/libcjson/lib
+includedir=/opt/libcjson/include
+
+Name: libcjson_utils
+Version: 1.7.18
+Description: An implementation of JSON Pointer, Patch and Merge Patch based on cJSON.
+URL: https://github.com/DaveGamble/cJSON
+Libs: -L${libdir} -lcjson_utils
+Cflags: -I${includedir} -I${includedir}/cjson
+Requires: libcjson