feat:Add python API GetKicadCurrentLanguage

pcbnew/python/scripting/pcbnew_scripting_helpers.cpp

@@ -605,3 +605,11 @@ bool WriteDRCReport( BOARD* aBoard, const wxString& aFileName, EDA_UNITS aUnits,
 
     return true;
 }
+
+wxString GetLanguage()
+{
+    if( s_PcbEditFrame )
+        return GetSettingsManager()->GetCommonSettings()->m_System.language;
+    else
+        return "";
+}

pcbnew/python/scripting/pcbnew_scripting_helpers.h

@@ -209,4 +209,11 @@ bool IsActionRunning();
 bool WriteDRCReport( BOARD* aBoard, const wxString& aFileName, EDA_UNITS aUnits,
                      bool aReportAllTrackErrors );
 
+/**
+ * Get the language string from COMMON_SETTINGS.
+ *
+ * @return the current language string.
+ */
+wxString GetLanguage();
+
 #endif      // __PCBNEW_SCRIPTING_HELPERS_H