chore: import upstream snapshot with attribution

examples/forms-with-multiple-steps/cookies/finish.sql

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+insert into users (
+    name, email, age
+) values (
+    sqlpage.cookie('name'),
+    sqlpage.cookie('email'),
+    :age -- This is the age that was submitted from the form in step_3.sql
+);
+
+-- remove cookies
+with t(name) as (values ('name'), ('email'), ('age'))
+select 'cookie' as component, name, '/cookies/' as path, true as remove from t;
+
+select
+    'alert' as component,
+    'Welcome, ' || name || '!' as title,
+    'You are user #' || id || '. [Create a new user](step_1.sql)' as description_md
+from users where id = last_insert_rowid();
+
+select 'list' as component, 'Existing users' as title, 'users' as value;
+select name as title, email as description from users;

examples/forms-with-multiple-steps/cookies/index.sql

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+select 'redirect' as component, 'step_1.sql' as link;

examples/forms-with-multiple-steps/cookies/step_1.sql

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+select
+    'form' as component,
+    'step_2.sql' as action;
+
+select
+    'name' as name,
+    true as required,
+    sqlpage.cookie ('name') as value;

examples/forms-with-multiple-steps/cookies/step_2.sql

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+select
+    'cookie' as component,
+    'name' as name,
+    :name as value,
+    '/cookies/' as path; -- Only send the cookie for pages in the /cookies/ directory
+
+select
+    'form' as component,
+    'step_3.sql' as action;
+
+select
+    'email' as name,
+    'email' as type,
+    true as required,
+    sqlpage.cookie ('email') as value,
+    'you@example.com' as placeholder,
+    'Hey ' || coalesce(:name, sqlpage.cookie('name')) || '! what is your email?' as description;

examples/forms-with-multiple-steps/cookies/step_3.sql

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+select
+    'cookie' as component,
+    'email' as name,
+    :email as value,
+    '/cookies/' as path;
+
+select
+    'form' as component,
+    'finish.sql' as action;
+
+select
+    'age' as name,
+    'number' as type,
+    true as required,
+    'How old are you, ' || sqlpage.cookie('name') || '?' as description;