RDC python binding

A new folder python_binding is created for RDC python binding:
* The rdc_bootstrap.py is a python ctypes wrapper for the librdc_boostrap.so
* The RdcUtil.py defines common utilities for RDC to manage group/fieldgroup
* The RdcReader.py is a class to simplify the usage of the RDC:
  - The user only needs to specify which fields he wants to monitoring.
     RdcReader will create groups and fieldgroups, watch the fields, and fetch the fields.
  - The RdcReader can support embedded and standalone mode.
  - The standalone can be with authentication and without authentication.
  - In standalone mode, the RdcReader can automatically reconnect to the rdcd when the connection is lost.
  - When rdcd is restarted, the previously created group and fieldgroup may lose.
    The RdcReader can re-create them and watch the fields after reconnect.
  - If the client is restarted, RdcReader can detect the groups and fieldgroups
    created before and avoid re-create them.
  - The user can pass the unit converter if he does not want to use RDC default unit.

Change-Id: I109ec86012f37162eb13f7d3e921115b7dd82369


[ROCm/rdc commit: 9209c6c516]

projects/rdc/include/rdc/rdc.h

@@ -777,6 +777,17 @@ const char* rdc_status_string(rdc_status_t status);
  */
 const char* field_id_string(rdc_field_t field_id);
 
+/**
+ *  @brief Get the field id from name
+ *
+ *  @details return the field id from field name.
+ *
+ *  @param[in] name The field name.
+ *
+ *  @retval return RDC_FI_INVALID if the field name is invalid.
+ */
+rdc_field_t get_field_id_from_name(const char* name);
+
 #ifdef __cplusplus
 }
 #endif  // __cplusplus