feat(api): Add projects endpoint

ref: #14 #267

app/api/serializers/project_management/projects.py

@@ -0,0 +1,48 @@
+from django.urls import reverse
+
+from rest_framework import serializers
+from rest_framework.fields import empty
+
+from project_management.models.projects import Project
+
+
+
+class ProjectSerializer(
+    serializers.ModelSerializer,
+):
+
+    url = serializers.SerializerMethodField('get_url')
+
+
+    def get_url(self, item):
+
+        request = self.context.get('request')
+
+        return request.build_absolute_uri(reverse("API:_api_projects-detail", args=[item.pk]))
+
+
+    class Meta:
+
+        model = Project
+
+        fields =  [
+            'id',
+            'name',
+            'description',
+            'code',
+            'planned_start_date',
+            'planned_finish_date',
+            'real_start_date',
+            'real_finish_date',
+            'manager_user',
+            'manager_team',
+            'team_members',
+            'created',
+            'modified',
+            'url',
+        ]
+
+        read_only_fields = [
+            'id',
+            'url',
+        ]