0022820: OCCT IGES writer loses plane information

added writing planes in Type 108 not like BSplines
pcurves for planes not writing
add parameter for choice between writing planes in BSplines and Planes
0022820: OCCT IGES writer loses plane information

pcurves were prohibited also for BRep mode
Adding test case for this fix

tests/bugs/iges/bug22820

@@ -0,0 +1,30 @@
+puts "================"
+puts "OCC22820"
+puts "================"
+puts ""
+#######################################################################################
+# OCCT IGES writer loses plane information
+######################################################################################
+
+pload XDE
+
+box b 1 1 1
+set b_info [dump b]
+if { [regexp BSplineSurface ${b_info}] } {
+   puts "Error in dump b"
+}
+
+brepiges b 0
+igesbrep . bb *
+
+set types_info [listtypes]
+puts "types_info=${types_info}"
+if { [regexp BSplineSurface ${types_info}] } {
+   puts "Error in listtypes"
+}
+
+igesbrep . bb *
+set bb_info [dump bb]
+if { [regexp BSplineSurface ${bb_info}] } {
+   puts "Error in dump bb"
+}