Feature to manipulate Work Calendars (#1420)

src/ifcopenshell-python/ifcopenshell/api/time/add_recurrence_pattern.py

@@ -0,0 +1,21 @@
+import ifcopenshell
+import ifcopenshell.api
+from datetime import time
+
+
+class Usecase:
+    def __init__(self, file, **settings):
+        self.file = file
+        self.settings = {"recurrence_type": 'WEEKLY'}
+        for key, value in settings.items():
+            self.settings[key] = value
+    
+    def execute(self):
+        
+        recurrence = self.file.createIfcRecurrencePattern(self.settings['recurrence_type'])
+        #recurrence.WeekdayComponent = [self.file.createIfcDayInWeekNumber(1),self.file.createIfcDayInWeekNumber(2)]
+        recurrence.TimePeriods = [
+            self.file.createIfcTimePeriod(time(8).isoformat(),time(12).isoformat()),
+            self.file.createIfcTimePeriod(time(13).isoformat(),time(17).isoformat())
+        ]
+        return recurrence