feat: Add basic flow to add adoption notices

src/fellchensammlung/forms.py

@@ -0,0 +1,23 @@
+from django import forms
+from .models import AdoptionNotice, Animal
+
+
+class DateInput(forms.DateInput):
+    input_type = 'date'
+
+
+class AdoptionNoticeForm(forms.ModelForm):
+    class Meta:
+        model = AdoptionNotice
+        fields = ['name', "group_only", "further_information", "description", "searching_since"]
+        widgets = {
+            'searching_since': DateInput(),
+        }
+
+class AnimalForm(forms.ModelForm):
+    class Meta:
+        model = Animal
+        fields = ['name', "species", "sex", "date_of_birth", "description", "photos"]
+        widgets = {
+            'date_of_birth': DateInput(),
+        }