Add parsing JSON for State Sensor PDR

According to spec DSP0248_1.2.0: 28.6 and sensor_pdr.json, parse JSON
and generate PDR structure.

Tested with JSON file:
https://gist.github.com/lxwinspur/6a40abea7330c25e4d49826e890c4be9

Signed-off-by: George Liu <liuxiwei@inspur.com>
Change-Id: I654913b6fa07f34f405f7dd41a5f1ac0ae2706fb
diff --git a/libpldmresponder/pdr_utils.hpp b/libpldmresponder/pdr_utils.hpp
index 2843ee6..c463f1f 100644
--- a/libpldmresponder/pdr_utils.hpp
+++ b/libpldmresponder/pdr_utils.hpp
@@ -30,6 +30,15 @@
 namespace pdr_utils
 {
 
+/** @struct Type ID associated with pdr
+ *
+ */
+enum class TypeId
+{
+    PLDM_EFFECTER_ID,
+    PLDM_SENSOR_ID
+};
+
 /** @struct PdrEntry
  *  PDR entry structure that acts as a PDR record structure in the PDR
  *  repository to handle PDR APIs.