IO-3292 Add note pinning functionality.

hasura/migrations/1753134828673_alter_table_public_notes_add_column_pinned/down.sql

@@ -0,0 +1,4 @@
+-- Could not auto-generate a down migration.
+-- Please write an appropriate down migration for the SQL below:
+-- alter table "public"."notes" add column "pinned" boolean
+--  not null default 'false';

hasura/migrations/1753134828673_alter_table_public_notes_add_column_pinned/up.sql

@@ -0,0 +1,2 @@
+alter table "public"."notes" add column "pinned" boolean
+ not null default 'false';