feat(project_management): add estimation field to project api fields

ref: #722 closes #312

app/project_management/models/projects.py

@@ -200,6 +200,7 @@ class Project(ProjectCommonFieldsName):
                         'priority',
                     ],
                     "right": [
+                        'estimation_project',
                         'duration_project',
                     ]
                 },
@@ -317,6 +318,32 @@ class Project(ProjectCommonFieldsName):
         return int(duration_project)
 
 
+    @property
+    def estimation_project(self) -> int:
+
+        estimation_project: int = 0
+
+        from core.models.ticket.ticket import Ticket
+
+        tickets = Ticket.objects.filter(
+            project = self.id
+        )
+
+        for ticket in tickets:
+            
+            estimation = ticket.estimate
+
+            if ticket.estimate is None:
+
+                estimation = 0
+
+
+            estimation_project = estimation_project + int(estimation)
+
+
+        return int(estimation_project)
+
+
     @property
     def percent_completed(self) -> str: # Auto-Calculate
         """ How much of the project is completed.

app/project_management/serializers/project.py

@@ -90,6 +90,7 @@ class ProjectModelSerializer(
             'description',
             'priority',
             'state',
+            'estimation_project',
             'duration_project',
             'completed',
             'project_type',
@@ -110,6 +111,8 @@ class ProjectModelSerializer(
 
         read_only_fields = [
             'id',
+            'estimation_project',
+            'duration_project',
             'completed',
             'display_name',
             'external_ref',