feat(backend,api): Add comment

legalconsenthub-backend/src/main/resources/db/migrations/001-schema.sql

@@ -13,6 +13,18 @@ create table application_form
     primary key (id)
 );
 
+create table comment
+(
+    created_at      timestamp(6) not null,
+    modified_at     timestamp(6) not null,
+    form_element_id uuid         not null,
+    id              uuid         not null,
+    created_by_id   varchar(255) not null,
+    created_by_name varchar(255) not null,
+    message         varchar(255) not null,
+    primary key (id)
+);
+
 create table form_element_options
 (
     employee_data_category tinyint      not null check (employee_data_category between 0 and 3),
@@ -30,6 +42,11 @@ create table form_element
     primary key (id)
 );
 
+alter table if exists comment
+    add constraint FKfg84w0i76tw9os13950272c6f
+    foreign key (form_element_id)
+    references form_element;
+
 alter table if exists form_element_options
     add constraint FKnq0lpby5nspv1xi27n9el6us6
     foreign key (form_element_id)