feat: add consent form for data processing

breccia_mapper/forms.py

@@ -0,0 +1,15 @@
+from django import forms
+from django.contrib.auth import get_user_model
+
+User = get_user_model()  # pylint: disable=invalid-name
+
+
+class ConsentForm(forms.ModelForm):
+    """Form used to collect user consent for data collection / processing."""
+    class Meta:
+        model = User
+        fields = ['consent_given']
+        labels = {
+            'consent_given':
+            'I have read and understood this information and consent to my data being used in this way',
+        }