feat(human_resources): Serializer for Employee

ref: #722 #684

app/human_resources/serializers/employee.py

@@ -0,0 +1,76 @@
+from drf_spectacular.utils import extend_schema_serializer
+
+from access.serializers.contact import (
+    BaseSerializer as ContactBaseSerializer,
+    ModelSerializer as ContactModelSerializer,
+)
+from access.serializers.organization import OrganizationBaseSerializer
+
+from human_resources.models.employee import Employee
+
+
+
+class BaseSerializer(
+    ContactBaseSerializer,
+):
+
+    pass
+
+
+
+@extend_schema_serializer(component_name = 'EmployeeEntityModelSerializer')
+class ModelSerializer(
+    BaseSerializer,
+    ContactModelSerializer,
+):
+    """Employee Model
+
+    This model inherits from Contact model.
+    """
+
+
+    class Meta:
+
+        model = Employee
+
+        fields = [
+            'id',
+            'person_ptr_id',
+            'organization',
+            'entity_type',
+            'display_name',
+            'employee_number',
+            'f_name',
+            'm_name',
+            'l_name',
+            'dob',
+            'email',
+            'directory',
+            'model_notes',
+            'is_global',
+            'created',
+            'modified',
+            '_urls',
+        ]
+
+        read_only_fields = [
+            'id',
+            'display_name',
+            'entity_type',
+            'created',
+            'modified',
+            '_urls',
+        ]
+
+
+
+@extend_schema_serializer(component_name = 'EmployeeEntityViewSerializer')
+class ViewSerializer(
+    ModelSerializer,
+    ):
+    """Employee View Model
+
+    This model inherits from the Contact model.
+    """
+
+    organization = OrganizationBaseSerializer(many=False, read_only=True)