feat(pets): adds bp, service and filters template and logic

app/pets/__init__.py

@@ -0,0 +1,4 @@
+from flask import Blueprint
+
+bp = Blueprint('pets', __name__)
+from app.pets import routes

app/pets/routes.py

@@ -0,0 +1,7 @@
+from flask import request, render_template
+from app.pets import bp
+from app.services.pet_service import PetService
+
+@bp.route('/')
+def index():
+    return render_template("pets/index.html", options=PetService.get_options(request))