add xname in fscan title to ease PyMca use (x selection)

id26/scripts/fscan.py

@@ -143,8 +143,10 @@ def fscan(
         print('after aqcuisition chain definition.')
         print(f"@{time.time()-time0:.3f}s")
 
+        xname = 'hdh_energy'
+
         scan_info_dict = {
-            "title": f"fscan {energy_start} {energy_end} {duration} {energy_step}",
+            "title": f"fscan {xname} {energy_start} {energy_end} {duration} {energy_step}",
             "start": energy_start,
             "stop": energy_end,
             "npoints": nbpoints,
@@ -152,11 +154,9 @@ def fscan(
             "count_time": exp_time,
         }
 
-
         scan_info = ScanInfo()
         scan_info.update(scan_info_dict)
 
-        xname = 'hdh_energy'
         scan_info.add_curve_plot( x=xname )
         
         scan_info.set_channel_meta(