Add YAML Migrations

[xiaohutai]

See for the diff: https://gist.github.com/xiaohutai/b5f44fec671cfff6691255354f6f769b

Not sure if the uncommented canonical: https://example.org was intentional.

Need to test the integrations before merging in.

[bobdenotter]

I think JSON_VALUE needs to be added:

https://github.com/bolt/project/blob/5.2-php-8/config/packages/doctrine.yaml#L37

And also: adapter: cache.system -> adapter: cache.app

bolt/project@f33248d#diff-79c1dc283ac8f8d1d02991db661137a22a20b13cd277962eae1d0dbfb2d96467

[xiaohutai]

I found the one for for doctrine.yaml: #2088

Not sure if 5.1.6 is still the correct version here, but it seems the existing config in 5.1 already has it added: https://github.com/bolt/core/blob/5.1/config/packages/doctrine.yaml#L35C2-L35C21 (Ideally this migration should've been added with the config change 😋)

I've added those, but the bolt/core doesn't have the cache.app so I changed it in this commit as well.

[bobdenotter]

Whoop! 👍